1851-1900
A
- A. Sankey Latty papers, 1851-1890.
- Aaron Burton Levisee papers, 1847-1992.
- Aaron Ward Weaver letterpress books, 1861-1884.
- Abbe, Cleveland, 1838-1916. Cleveland Abbe papers, 1850-1954.
- Abbot family. Henry L. Abbot family papers, 1770-2001.
- Abbot, Henry L. Henry L. Abbot family papers, 1770-2001.
- Abraham Lincoln papers, 1774-1948.
- Acheson, Edward Goodrich, 1856-1931. A pathfinder: discovery, invention and industry; how the world came to have aquadag and oildag; also carborundum, artificial graphite and other valuable products of the electric furnace. The first of a series of educational biographical sketches of eminent inventors. 1910.
- Acheson, Edward Goodrich, 1856-1931. Edward Goodrich Acheson papers, 1872-1968.
- A.D. Bache papers, 1828-1863.
- Adams, Richard, fl. 1793. Richard Adams papers.
- Adee, Alvey A. (Alvey Augustus), 1842-1924. Alvey A. Adee papers.
- Adee, Augustus Alvey, 1802-1844. Augustus Alvey Adee papers.
- Adee, David Graham, 1837-1901. David Graham Adee papers.
- Adee family. Adee family papers, 1824-1966.
- Adee family papers, 1824-1966.
- Adelaide Johnson papers, 1873-1947.
- Adelaide Rosalia Hasse papers, 1862-1951.
- Aero Club of America. Aero Club of America scrapbooks, 1891-1912.
- Aero Club of America scrapbooks, 1891-1912.
- L'Aerophile collection, 1876-1949.
- Afro-American military collection, 1773-1987.
- Aiken family. Pierce-Aiken family papers, 1797-1903.
- A.K. Fisher papers, 1827-1957.
- Albert Gleaves papers, 1803-1946.
- Albert James Myer papers, 1816-1880.
- Albert James Myer papers, 1851-1933.
- Albert Jeremiah Beveridge papers, 1788-1943.
- Alberto Nepomuceno collection, 1887-1920.
- Aldrich, Abby Pearce Chapman, 1845-1917. Abby Pearce Chapman Aldrich diaries. 1904-1912.
- Aldrich family. John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers. 1745-1966.
- Aldrich, Morton Arnold, 1874-1956. Morton Arnold Aldrich papers.
- Aldrich, Nelson W. (Nelson Wilmarth), 1841-1915. Nelson W. Aldrich papers, 1777-1930.
- Aldrich, Thomas Bailey, 1836-1907. Thomas Bailey Aldrich papers, 1873-1901.
- Aldrich, Zoë Worthington Fiske, 1864-1942. Zoë Worthington Fiske Aldrich papers.
- Alex. Brown & Sons. Alex. Brown & Sons records, 1796-1908.
- Alex. Brown & Sons records, 1796-1908.
- Alexander Freud and Sophie Schreiber Freud papers, 1872-1965.
- Alexander Graham Bell family papers, 1834-1974.
- Alexander Hamilton Stephens papers, 1784-1886.
- Alexander Robey Shepherd papers, 1776-1945.
- Alexis Vasilevich Babine papers, 1895-1953.
- Alfred Carmon papers, 1859-1865.
- Alfred Mordecai papers, 1790-1948.
- Alice Roosevelt Longworth papers, 1888-1942.
- Allen, Charles Julius, 1840-1915. Charles Julius Allen papers.
- Allen, Elisha Hunt, 1804-1883. Elisha Hunt Allen papers, 1849-1934.
- Allen, Grace Elizabeth, 1886-1976. Grace Elizabeth Allen papers.
- Allen, Henry T. (Henry Tureman), 1859-1930. Henry T. Allen papers, 1806-1933.
- Allen, William, 1803-1879. William Allen papers, 1796-1879.
- Allen, William A. H. William A.H. Allen papers, 1863-1884.
- Allison, Mary Ireland, d.1870. Mary Ireland Allison diary. 1868-1869.
- Allison, William Henry, 1870-1941. William Henry Allison diaries, 1868-1940.
- Almon Ferdinand Rockwell papers, 1852-1900.
- Ambrose W. Thompson papers, 1847-1960.
- Ameen Fares Rihani papers, 1897-1940.
- American Colonization Society. American Colonization Society records, 1792-1964.
- American Colonization Society records, 1792-1964.
- American Colony in Jerusalem collection, circa 1786-2007.
- American Colony (Jerusalem). American Colony in Jerusalem collection, circa 1786-2007.
- American Federation of Labor. American Federation of Labor records, 1883-1925.
- American Federation of Labor records, 1883-1925.
- American Institute of Aeronautics and Astronautics. Institute of Aerospace Sciences archives, 1783-1962.
- Amory Austin collection relating to heraldry, 1865-1917.
- Amory family. Amory family papers, 1697-1882.
- Amory family papers, 1697-1882.
- Amory, John, 1728-1803. John Amory petition. circa 1783.
- Amory, Thomas, 1682-1728. Thomas Amory papers.
- Amory, Thomas, 1762-1823. Thomas Amory papers.
- Amos Kendall papers, 1835-1909.
- Andersen, Hendrik Christian, 1872-1940. Hendrik Christian Andersen papers, 1844-1940.
- Andersen, Olivia Cushing, b. 1871. Olivia Cushing Andersen papers. 1882-1929.
- Anderson, Chandler P. (Chandler Parsons), 1866-1936. Chandler P. Anderson papers, 1894-1953.
- Anderson, Frank Maloy, 1871-1961. Frank Maloy Anderson papers, circa 1895-circa 1961.
- Anderson, Robert, 1805-1871. Robert Anderson papers, 1819-1948.
- Andrew Carnegie papers, 1803-1935.
- Andrew H. Foote papers, 1822-1890.
- Andrew Jackson Donelson papers, 1779-1943.
- Andrew Johnson papers, 1783-1947.
- Andrew Stevenson and J.W. Stevenson papers, 1756-1882.
- Anita Newcomb McGee papers, 1688-1932.
- Anna E. Dickinson papers, 1859-1951.
- Anna Maria Brodeau Thornton papers, 1793-1861.
- Anna Maria Evans papers, 1835-1914.
- Anson Burlingame and Edward L. Burlingame family papers, 1810-1922.
- Anthony League of the District of Columbia. Anthony League of the District of Columbia records.
- Anthony, Mary S. Mary S. Anthony papers.
- Anthony, Susan B. (Susan Brownell), 1820-1906. Susan B. Anthony papers, 1846-1934.
- Appleton, Nathan, 1843-1906. Nathan Appleton papers, 1850-1904.
- Appling, Austin M. (Austin Maurice), b. 1794. Austin M. Appling account ledgers. 1832-1862.
- Argenteau family. Mercy-Argenteau family papers, 1410-1921.
- Armand Hammer papers, circa 1508-1989.
- Armes, Ethel, 1876-1945. Ethel Armes collection of Lee family papers, 1671-1936.
- Arne Oldberg collection, circa 1887-1962.
- Arthur, Chester Alan, 1829-1886. Chester Alan Arthur papers, 1843-1960.
- Arthur, Chester Alan, 1864-1937. Chester Alan Arthur papers. 1874-1937.
- Arthur, Chester Alan, 1901-1972. Chester Alan Arthur papers. 1853-1972.
- Arthur family. Arthur family papers, 1817-1972.
- Arthur family. Charles Pinkerton collection of Arthur and Herndon family papers, 1822-1938.
- Arthur family papers, 1817-1972.
- Artur Schnabel collection, 1899-1950.
- Asa Gray papers, 1840-1859.
- Asaph Hall papers, 1837-1983.
- A.T. Mahan papers, 1779-1970.
- August V. Kautz papers, 1846-1939.
- Augustus S. Nicholson papers, 1861-1934.
- Austin, Amory. Amory Austin collection relating to heraldry, 1865-1917.
- A.W. Greely papers, 1753-1959.
- Axson, Samuel Edward, ca. 1836-1884. Samuel Edward Axson sermons, 1857-1880.
- Ayestarán, Lauro. Lauro Ayestarán collection, 1830-1966.
B
- Babine, Alexis Vasilevich, 1866-1930. Alexis Vasilevich Babine papers, 1895-1953.
- Bache, A. D. (Alexander Dallas), 1806-1867. A.D. Bache papers, 1828-1863.
- Baird, Samuel J. (Samuel John), 1817-1893. Samuel J. Baird papers, 1834-1892.
- Baldorioty de Castro, Román, 1822-1889. Román Baldorioty de Castro papers.
- Baldwin, Evelyn Briggs, 1862-1933. Evelyn Briggs Baldwin papers, 1649-1933.
- Ballinger, William Pitt, 1825-1888. William Pitt Ballinger diaries. 1871-1886.
- Baltimore Insurance Company. Baltimore Insurance Company records.
- Bancroft-Bliss families papers, 1788-1928.
- Bancroft, Elizabeth Davis, 1803-1886. Elizabeth Davis Bancroft papers.
- Bancroft family. Bancroft-Bliss families papers, 1788-1928.
- Bancroft, George, 1800-1891. George Bancroft papers.
- Bangs, George H. George H. Bangs papers.
- Banks, Nathaniel Prentiss, 1816-1894. Nathaniel Prentiss Banks papers, 1829-1911.
- Barbee, David Rankin, 1874-1958. James Dodson and David Rankin Barbee papers. 1784-1953.
- Barbee, James Dodson, 1832-1904. James Dodson Barbee and David Rankin Barbee papers, 1784-1953.
- Barbour, Lucian, 1811-1880. Lucian Barbour papers, 1838-1977.
- Barker, Wharton, 1846-1921. Wharton Barker papers, 1864-1921.
- Barnett Allen Howard papers, 1885-1949.
- Bartlett, Ezra, 1770-1848. Ezra Bartlett papers.
- Bartlett family. Josiah Bartlett family papers, 1710-1931.
- Bartlett, Josiah, 1729-1795. Josiah Bartlett family papers, 1710-1931.
- Bartlett, Josiah, 1729-1795. Josiah Bartlett papers.
- Bartlett, Josiah, 1768-1838. Josiah Bartlett papers.
- Bartlett, Josiah, 1803-1853. Josiah Bartlett papers.
- Bartlett, Levi, 1763-1828. Levi Bartlett papers.
- Bartlett, Suzanne Earle Ogden-Jones Emmons, 1861-1954. Suzanne Earle Ogden-Jones Emmons Bartlett papers. 1897-1913.
- Barton, Clara, 1821-1912. Clara Barton papers, 1805-1958.
- Bassett, John Spencer, 1867-1928. John Spencer Bassett papers, 1770-1978.
- Batchelder, John Davis, 1872-1958. John Davis Batchelder collection of manuscripts, 1537-1944.
- Batchelder, John Davis, 1872-1958. John Davis Batchelder papers. 1910-1944.
- Bates, David Homer, 1843-1926. David Homer Bates papers, 1837-1926.
- Bates, Edward, 1793-1869. Edward Bates papers, 1818-1904.
- Bayard, James A. (James Asheton), 1767-1815. James A. Bayard and Richard H. Bayard papers. 1797-1885.
- Bayard, Richard H. (Richard Henry), 1796-1868. James A. Bayard and Richard H. Bayard papers. 1797-1885.
- Bayard, Thomas F. (Thomas Francis), 1828-1898. Thomas F. Bayard papers, 1780-1899.
- Beach, Joseph Warren, 1880-1957. Concept of nature in nineteenth-century English poetry. 1936.
- Beach, Joseph Warren, 1880-1957. Joseph Warren Beach papers, 1891-1955.
- Beach, Joseph Warren, 1880-1957. Making of the Auden canon. 1957.
- Beale, Edward Fitzgerald, 1822-1893. Edward Fitzgerald Beale papers.
- Beale family. Beale family papers from the Decatur House, 1794-1957.
- Beale family papers from the Decatur House, 1794-1957.
- Beale, Marie Oge, 1880-1956. Marie Oge Beale diaries.
- Beale, Truxton, 1856-1936. Truxton Beale papers.
- Beatty, Charles, of Georgetown, Md. Charles Beatty account book. 1750-1809.
- Beauregard, G. T. (Gustave Toutant), 1818-1893. G.T. Beauregard papers, 1844-1883.
- Becker, George F. (George Ferdinand), 1847-1919. George F. Becker papers, 1814-1928.
- Beckley, Alfred, 1802-1888. Alfred Beckley papers.
- Beckley family. John James Beckley family papers, 1789-1918.
- Beckley, John James, 1757-1807. John James Beckley family papers, 1789-1918.
- Beecher, Henry Ward, 1813-1887. Henry Ward Beecher papers, 1836-1886.
- Bela Lyon Pratt papers, 1884-1918.
- Belknap, George E. (George Eugene), 1832-1903. George E. Belknap papers, 1857-1903.
- Bell, Alexander Graham, 1847-1922. Alexander Graham Bell family papers, 1834-1974.
- Bell, Alexander Melville, 1819-1905. Alexander Melville Bell papers.
- Bell family. Alexander Graham Bell family papers, 1834-1974.
- Bell, Mabel Gardiner Hubbard, 1857-1923. Mabel Gardiner Hubbard Bell papers.
- Belle Brown collection, 1865-1912.
- Bendire, Charles, 1836-1897. Charles Bendire papers, 1874-1919.
- Benham, Donald. Donald Benham Civil War collection, 1806-1916.
- Benjamin B. French family papers, 1778-1940.
- Benjamin, Calvin, d. 1847. Calvin Benjamin papers, circa 1838-1882.
- Benjamin F. Butler papers, 1778-1929.
- Benjamin F. Whitten papers, 1848-1945.
- Benjamin Harrison papers, 1780-1948.
- Benjamin Helm Bristow papers, 1839-1932.
- Benjamin Holt Ticknor papers, 1595-1935.
- Benjamin Tappan papers, 1795-1900.
- Benjamin Titus Roberts family papers, 1832-1954.
- Bennett, Frank M. (Frank Marion), 1857-1924. Frank M. Bennett papers, 1893-1909.
- Bennett, James Gordon, 1795-1872. James Gordon Bennett papers, 1845-1934.
- Berlepsch, Hans Hermann Carl Ludwig, Graf von, 1850-1915. Hans Hermann Carl Ludwig, Graf von Berlepsch, correspondence, 1874-1913.
- Berliner, Emile, 1851-1929. Emile Berliner collection, 1871-1965.
- Berliner, Emile, 1851-1929. Emile Berliner papers, 1856-1929.
- Berryman, Clifford Kennedy, 1869-1949. Clifford Kennedy Berryman papers, 1814-1965.
- Betances, Ramón Emeterio, 1827-1898. Ramón Emeterio Betances correspondence.
- Beveridge, Albert Jeremiah, 1862-1927. Albert Jeremiah Beveridge papers, 1788-1943.
- B.F. Wade papers, 1832-1886.
- Bickerdyke, Mary Ann, 1817-1901. Mary Ann Bickerdyke papers, 1847-1905.
- Biddle, Eliza. Eliza Biddle diary. 1814.
- Bing, Julius. Julius Bing writings.
- Bingham, Theo. A. (Theodore Alfred), 1858-1934. Theo. A. Bingham papers, 1897-1903.
- Black, Chauncey F. Chauncey F. Black papers.
- Black history collection, 1700-2008.
- Black, Jeremiah S. (Jeremiah Sullivan), 1810-1883. Jeremiah S. Black papers, 1813-1904.
- Blackwell, Alice Stone, 1857-1950. Alice Stone Blackwell papers.
- Blackwell, Antoinette Louisa Brown, 1825-1921. Antoinette Louisa Brown Blackwell papers.
- Blackwell, Elizabeth, 1821-1910. Elizabeth Blackwell papers.
- Blackwell, Emily, 1826-1910. Emily Blackwell papers.
- Blackwell family. Blackwell family papers, 1759-1960.
- Blackwell family papers.
- Blackwell family papers, 1759-1960.
- Blackwell, Henry Browne, 1825-1909. Henry Browne Blackwell papers.
- Blackwell, Kitty Barry, 1848-1936. Kitty Barry Blackwell papers.
- Bladen Dulany papers, 1817-1855.
- Blaine family. James Gillespie Blaine family papers, 1777-1945.
- Blaine, James Gillespie, 1830-1893. James Gillespie Blaine family papers, 1777-1945.
- Blair family. Blair family papers, 1755-1968.
- Blair family papers, 1755-1968.
- Blair, Francis Preston, 1791-1876. Francis Preston Blair papers.
- Blair, Frank P. (Frank Preston), 1821-1875. Frank P. Blair papers.
- Blair, Gist, 1860-1940. Gist Blair papers.
- Blair, Montgomery, 1813-1883. Montgomery Blair papers.
- Blair, Woodbury. Woodbury Blair papers.
- Bledsoe, Albert Taylor, 1809-1877. Albert Taylor Bledsoe papers.
- Blennerhassett, Harman, 1765-1831. Harman Blennerhassett papers, 1755-1866.
- Blennerhassett, Harman, 1801-1854. Harman Blennerhassett manuscript volume.
- Bliss, Alexander, 1792-1827. Alexander Bliss papers.
- Bliss, Alexander, d. 1896. Alexander Bliss papers.
- Bliss family. Bancroft-Bliss families papers, 1788-1928.
- Bloch, Ernest, 1880-1959. Eric Johnson collection of Ernest Bloch photographs. 1896-2008.
- Bloch, Ernest, 1880-1959. Ernest Bloch collection.
- Boardman, Mabel Thorp, 1860-1946. Mabel Thorp Boardman papers, 1853-1945.
- Boas, Franz, 1858-1942. Franz Boas papers, 1878-1943.
- Bonaparte, Charles J. (Charles Joseph), 1851-1921. Charles J. Bonaparte papers, 1760-1921.
- Bourne, Wm. Oland (William Oland), 1819-1901. Wm. Oland Bourne papers, 1841-1885.
- Bowen, Sayles Jenks, 1813-1896. Sayles Jenks Bowen papers, 1836-1882.
- Bowker, R. R. (Richard Rogers), 1848-1933. R.R. Bowker papers, 1831-1931.
- Bradbury collection, 1846-1928.
- Bradbury, William B. (William Batchelder), 1816-1868. William B. Bradbury collection, 1846-1928.
- Brand Whitlock papers, circa 1890-1934.
- Breckinridge, Clifton Rodes, 1846-1932. Clifton Rodes Breckinridge papers.
- Breckinridge, Desha, 1867-1935. Desha Breckinridge papers.
- Breckinridge family. Breckinridge family papers, 1752-1965.
- Breckinridge family papers, 1752-1965.
- Breckinridge, Henry, 1886-1960. Henry Breckinridge papers.
- Breckinridge, John, 1760-1806. John Breckinridge papers.
- Breckinridge, John C. (John Cabell), 1821-1875. John C. Breckinridge papers.
- Breckinridge, Joseph Cabell, 1842-1920. Joseph Cabell Breckinridge papers.
- Breckinridge, Katherine Carson. Katherine Carson Breckinridge papers.
- Breckinridge, Madeline McDowell, 1872-1920. Madeline McDowell Breckinridge papers.
- Breckinridge, Robert J. (Robert Jefferson), 1800-1871. Robert J. Breckinridge papers.
- Breckinridge, Sophonisba Preston, 1866-1948. Sophonisba Preston Breckinridge papers.
- Breckinridge, William Campbell Preston, 1837-1904. William Campbell Preston Breckinridge papers.
- Breuer, Josef, 1842-1925. Josef Breuer papers, 1859-1970.
- Bristow, Benjamin Helm, 1832-1896. Benjamin Helm Bristow papers, 1839-1932.
- Brodhead, Daniel Dodge. Daniel Dodge Brodhead papers, 1821-1853.
- Bromwell, Henry Pelham Holmes, 1823-1903. Henry Pelham Holmes Bromwell papers, 1794-1929.
- Brooks, Peter Chardon, 1767-1849. Peter Chardon Brooks papers.
- Brown, Belle. Belle Brown collection, 1865-1912.
- Brown, Charles Matthew. U.S. Army 23rd Iowa Volunteer Infantry history. undated.
- Brown, John C., d. 1863. Matthew C. Brown and John C. Brown papers. 1862-1865.
- Brown, Matthew C. Matthew C. Brown and John C. Brown papers, 1862-1901.
- Browning, Charles Henry. Charles Henry Browning papers.
- Browning, Eleanor Hanlon, 1809-1857. Eleanor Hanlon Browning papers.
- Browning family. Browning family papers, 1824-1917.
- Browning family papers, 1824-1917.
- Browning, Robert Lewright, 1803-1850. Robert Lewright Browning papers.
- Browning, Robert Lewright, 1835-1860. Robert Lewright Browning papers.
- Brownson, Willard H. (Willard Herbert), 1845-1935. Willard H. Brownson papers, 1859-1932.
- Bruce, Charles, 1798-1879. Charles Bruce papers.
- Bruce, Elvira, 1788-1858. Elvira Bruce papers.
- Bruce, Eugene S. (Eugene Sewell), 1860-1920. Eugene S. Bruce papers.
- Bruce family. Bruce family papers, 1792-1883.
- Bruce family papers, 1792-1883.
- Bruce, James, 1763-1837. James Bruce papers.
- Bryan, W. B. (Wilhelmus Bogart), 1854-1938. W.B. Bryan notes and newspaper extracts, 1789-1888.
- Bryan, William Jennings, 1860-1925. William Jennings Bryan papers, 1877-1940.
- Buchanan, James, 1791-1868. James Buchanan and Harriet Lane Johnston papers, 1825-1887.
- Buchman, Frank Nathan Daniel, 1878-1961. Frank Nathan Daniel Buchman papers.
- Bucke, Richard Maurice, 1837-1902. Richard Maurice Bucke papers.
- Bullard, Robert Lee, 1861-1947. Robert Lee Bullard papers, 1881-1955.
- Burbank family. Burbank-Van Voorhis families papers, 1814-1913.
- Burbank, Luther, 1849-1926. Luther Burbank papers, 1830-1989.
- Burbank, Sidney, 1807-1882. Sidney Burbank diaries. 1839-1880.
- Burbank, Sullivan, 1776-1862. Sullivan Burbank diary. 1814-1823.
- Burbank-Van Voorhis families papers, 1814-1913.
- Burlingame, Anson, 1820-1870. Anson Burlingame and Edward L. Burlingame family papers, 1810-1922.
- Burlingame, Edward L. (Edward Livermore), 1848-1922. Anson Burlingame and Edward L. Burlingame family papers. 1810-1922.
- Burlingame family. Anson Burlingame and Edward L. Burlingame family papers, 1810-1922.
- Burlingame, Jane Cornelia Livermore. Jane Cornelia Livermore Burlingame papers.
- Burton Kline papers, 1896-1954.
- Butler, Benjamin F. (Benjamin Franklin), 1818-1893. Benjamin F. Butler papers, 1778-1929.
- Butler, Charles, 1802-1897. Charles Butler papers, 1819-1929.
C
- C. Chaillé-Long papers, 1809-1918.
- C. William Witbeck legal collection, 1823-1933.
- Cadmus M. Wilcox papers, 1846-1887.
- Cadwallader, Sylvanus, b. 1825 or 6. Sylvanus Cadwallader papers, 1818-1904.
- Cahoone, John. John Cahoone journal. 1829.
- Caleb Cushing papers, circa 1785-1906.
- Caleb Henry Carlton papers, 1831-1954.
- Calvin Benjamin papers, circa 1838-1882.
- Cameron family. Miles-Cameron families correspondence, 1661-1956.
- Cameron, Simon, 1799-1889. Simon Cameron papers, 1738-1919.
- Campbell family. Campbell-Preston-Floyd families papers, 1741-1931.
- Campbell-Preston-Floyd families papers, 1741-1931.
- Canal Zone Library-Museum. Panama Collection, 1804-1977.
- Canberry, Lewis. Lewis Canberry survey notebooks. 1791-1828.
- Capek, Thomas, 1861-1950. Thomas Capek collection of materials relating to Czechoslovakia and Czech Americans, 1619-1953.
- Caperton, William Banks, 1855-1941. William Banks Caperton papers, 1873-1939.
- Capron, Horace, 1804-1885. Horace Capron papers, 1834-1961.
- Cardozo family. Francis Lewis Cardozo family papers, 1864-1968.
- Cardozo, Francis Lewis, 1836-1903. Francis Lewis Cardozo family papers, 1864-1968.
- Carey family. McCormick and Carey families papers, 1852-1987.
- Carey, William H., 1841-1863. William H. Carey papers.
- Carl Brent Swisher collection of research materials relating to Roger B. Taney, 1836-1962.
- Carl John Sacarisen diary, 1898-1899.
- Carl Koller papers, 1866-1988.
- Carl Schurz papers, 1842-1983.
- Carlton, Caleb Henry, 1836-1923. Caleb Henry Carlton papers, 1831-1954.
- Carman, Ezra Ayers, 1834-1909. Ezra Ayers Carman papers, 1861-1909.
- Carmon, Alfred. Alfred Carmon papers, 1859-1865.
- Carnegie, Andrew, 1835-1919. Andrew Carnegie papers, 1803-1935.
- Carpenter, Frances, 1890-1972. Frances Carpenter collection relating to Frank G. Carpenter, 1875-1960.
- Carpenter, Frank G. (Frank George), 1855-1924. Frances Carpenter collection relating to Frank G. Carpenter, 1875-1960.
- Carpenter, Fred W., 1873 or 4-1957 Fred W. Carpenter papers.
- Carr, Wilbur J. (Wilbur John), 1870-1942. Wilbur J. Carr papers, 1892-1942.
- Carrère, John Merven, 1858-1911. John Merven Carrère papers, 1894-1911.
- Carrie Chapman Catt papers, 1848-1950.
- Carrie Jacobs-Bond collection, circa 1896-circa 1944.
- Carroll, Daniel, 1764-1849. Daniel Carroll papers, 1662-1920.
- Carson, Marian S. Marian S. Carson collection of manuscripts, 1656-1995.
- Carter, Lucy Grymes Lee, 1786-1860. Lucy Grymes Lee Carter papers.
- Carter, Thomas Henry, 1854-1911. Thomas Henry Carter papers, 1883-1917.
- Casey, Silas, 1841-1913. Silas Casey papers, 1771-1941.
- Cass Gilbert papers, 1841-1961.
- Cass, Lewis, 1782-1866. Lewis Cass papers.
- Castle family. Henry Northrup Castle family papers, 1394-1920.
- Caton, John Dean, 1812-1895. John Dean Caton papers, 1826-1947.
- Catt, Carrie Chapman, 1859-1947. Carrie Chapman Catt papers, 1848-1950.
- Cattell, James McKeen, 1860-1944. James McKeen Cattell papers, 1835-1948.
- Causten, James H., 1788-1874. James H. Causten papers.
- Causten-Pickett papers, 1765-1916.
- C.B. Comstock papers, 1847-1908.
- Chaillé-Long, C. (Charles), 1842-1917. C. Chaillé-Long papers, 1809-1918.
- Chamberlain, Joshua Lawrence, 1828-1914. Joshua Lawrence Chamberlain papers, 1775-1913.
- Chandler B. Gillam papers, 1850-1919.
- Chandler P. Anderson papers, 1894-1953.
- Chandler, William E. (William Eaton), 1835-1917. William E. Chandler papers, 1863-1917.
- Chandler, Zachariah, 1813-1879. Zachariah Chandler papers, 1854-1899.
- Chanute, Octave, 1832-1910. Octave Chanute papers, 1807-1955.
- Charles Bendire papers, 1874-1919.
- Charles Bowdoin Fillebrown papers, 1879-1928.
- Charles Butler papers, 1819-1929.
- Charles Follen McKim papers, 1838-1929.
- Charles H. Rogers family papers, 1858-1930.
- Charles Henry Fromuth papers, 1884-1937.
- Charles Henry Harvey papers, 1835-1965.
- Charles J. Bonaparte papers, 1760-1921.
- Charles Jackson Train journals, 1863-1870.
- Charles Julius Allen and Grace Elizabeth Allen papers, 1865-1976.
- Charles Mason Remey family papers, 1778-1949.
- Charles N. Elliot collection, 1873-1951.
- Charles O'Neil papers, 1833-1927.
- Charles Pinkerton collection of Arthur and Herndon family papers, 1822-1938.
- Charles Russell Train papers, 1898-1967.
- Charles S. Hamlin papers, 1869-1968.
- Charles Sumner correspondence, 1841-1874.
- Charles W. Hack papers, circa 1800-1926.
- Charles W. Sirch papers, 1878-1935.
- Charles Wellington Reed papers, 1776-1926.
- Charles Wilkes papers, 1607-1959.
- Charles William Le Gendre papers, 1866-1893.
- Charlotte Cushman papers, 1823-1941.
- Chase, Cornelius, 1780-1868. Cornelius Chase family papers, 1745-1974.
- Chase, Cornelius Thurston, 1819-1870. Cornelius Thurston Chase papers. 1835-1953.
- Chase family. Cornelius Chase family papers, 1745-1974.
- Chase, Salmon P. (Salmon Portland), 1808-1873. Salmon P. Chase papers, 1755-1898.
- Chauncy, Elnathan, 1724-1796. Elnathan Chauncy sermons.
- Cheney, John Vance, 1848-1922. John Vance Cheney papers, 1847-1927.
- Chester Alan Arthur papers, 1843-1960.
- Choate, Joseph Hodges, 1832-1917. Joseph Hodges Choate papers, 1745-1929.
- Christian A. Fleetwood papers, 1797-1945.
- Christiancy and Pickett families' papers, 1835-1998.
- Christiancy family. Christiancy and Pickett families' papers, 1835-1998.
- Christiancy, Henry Clay, 1841-1925. Henry Clay Christiancy papers.
- Christiancy, James Isaac, 1843-1899. James Isaac Christiancy papers.
- Christopher Prince papers, 1806-1891.
- Clapp, Asa, 1762-1848. Asa Clapp papers.
- Clapp, Asa W. H. (Asa William Henry), 1805-1891. Asa William Henry Clapp papers.
- Clapp, Charles Q., 1799-1868. Charles Q. Clapp papers. (2)
- Clapp family. Clapp family papers, 1789-1935.
- Clapp family papers, 1789-1935.
- Clapp, Mary Jane Emerson, 1835-1922. Mary Jane Emerson Clapp papers.
- Clara A. Whitney papers, 1872-1975.
- Clara Barton papers, 1805-1958.
- Clark, Victor S. (Victor Selden), 1868-1946. Victor S. Clark papers, 1827-1944.
- Clarke-Smith, Linda. Rebekah Crawford and Linda Clarke-Smith papers. 1715-1929.
- Clausing, Ludwig, 1809?-1834. Ludwig Clausing papers.
- Clay family. Henry Clay family papers, 1732-1927.
- Clay, Henry, 1777-1852. Henry Clay family papers, 1732-1927.
- Clay, James B. (James Brown), 1817-1864. James B. Clay papers.
- Cleary, Reuben, 1835-1898. Reuben Cleary book manuscripts, 1886.
- Cleveland Abbe papers, 1850-1954.
- Cleveland, Grover, 1837-1908. Grover Cleveland papers, 1743-1945.
- Clifford Kennedy Berryman papers, 1814-1965.
- Coan family. Titus Coan family papers, 1818-1923.
- Coan, Titus, 1801-1882. Titus Coan family papers, 1818-1923.
- Coblentz, Catherine Cate, 1897-1951. Matthew Fontaine Maury biography. 1953.
- Coblentz, William W. (William Weber), 1873-1962. William W. Coblentz papers, 1883-1960.
- Coggeshall, Joseph. Joseph Coggeshall account book. 1771-1786.
- Colfax, Schuyler, 1823-1885. Schuyler Colfax correspondence and speeches, 1837-1882.
- Colhoun, Edmund Ross, 1821-1897. Edmund Ross Colhoun papers, 1821-1918.
- Coll y Toste, Cayetano, 1850-1930. Cayetano Coll y Toste collection relating to Puerto Rico, 1850-1894.
- Collier, Ellen C. (Ellen Clodfelter), 1927- Ellen C. Collier transcripts and related papers.
- Colson, Lewis Whitfield, 1880-1961. Lewis Whitfield Colson papers, 1894-1950.
- Comer, Lucretia Garfield, 1894-1968. Lucretia Garfield Comer papers.
- Comstock, C. B. (Cyrus Ballou), 1831-1910. C.B. Comstock papers, 1847-1908.
- Confederate States of America. Army. Confederate States of America. Army records. 1860-1865.
- Confederate States of America. Confederate States of America records, 1854-1889.
- Confederate States of America. Dept. of Justice. Confederate States of America. Dept. of Justice records.
- Confederate States of America. Dept. of State. Confederate States of America. Dept. of State records.
- Confederate States of America. Dept. of the Treasury. Confederate States of America. Dept. of the Treasury records.
- Confederate States of America. Navy. Confederate States of America. Navy records.
- Confederate States of America. Post-Office Dept. Confederate States of America. Post-Office Dept. records.
- Confederate States of America records, 1854-1889.
- Confederate States of America. War Dept. Confederate States of America. War Dept. records.
- Connor, Jeannette Thurber, d. 1927. Jeannette Thurber Connor collection of Floridiana, 1570-1927.
- Converse, Marion Singleton Deveaux, b. 1815. Marion Singleton Deveaux Converse papers.
- Cook, Frederick Albert, 1865-1940. Frederick Albert Cook papers, 1881-1977.
- Cooper Curtice papers, 1822-1953.
- Corbin, Hannah Lee, 1728-1782. Hannah Lee Corbin papers.
- Corbin, Henry Clark, 1842-1909. Henry Clark Corbin papers, 1864-1980.
- Corcoran, Thomas, 1754-1830. Thomas Corcoran correspondence and financial records.
- Corcoran, W. W. (William Wilson), 1798-1888. W.W. Corcoran papers, 1791-1896.
- Corey, Herbert, 1872-1954. Herbert Corey papers, 1847-1954.
- Cornelius Chase family papers, 1745-1974.
- Cornelius Marius Schoonmaker papers, 1833-1931.
- Cortelyou, George B. (George Bruce), 1862-1940. George B. Cortelyou papers, 1871-1948.
- Corwin, Thomas, 1794-1865. Thomas Corwin correspondence, 1850-1853.
- Count Adam G. de Gurowski papers, 1743-1898.
- Cox, Henry Bartholomew. Henry Bartholomew Cox collection, 1492-1960.
- Crawford, Rebekah, 1845-1934. Rebekah Crawford and Linda Clarke-Smith papers, 1715-1929.
- Crawford, Richard, 1738-1798. Richard Crawford account and ledger books. 1753-1830.
- Crawford, Samuel Wylie, 1827-1892. Samuel Wylie Crawford papers, 1860-1892.
- Creel, George, 1876-1953. George Creel papers, 1857-1953.
- Creswell, John A. J. (John Angel James), 1828-1891. John A.J. Creswell papers, 1819-1885.
- Crittenden, John J. (John Jordan), 1787-1863. John J. Crittenden papers, 1782-1913.
- Crofoot, Herman K. Herman K. Crofoot collection of Francis Elias Spinner papers. 1792-1908.
- Cruikshank, Robert. Robert Cruikshank daybook and letterbook. 1827-1831.
- Cuban Educational Association of the United States of America. Cuban Educational Association of the United States of America records, 1897-1954.
- Cuban Educational Association of the United States of America records, 1897-1954.
- Culbertson, William Smith, 1884-1966. William Smith Culbertson papers, 1897-1965.
- Cummings, Harry S., 1866-1917. Harry S. Cummings papers, 1890-1986.
- Curtice, Cooper, 1856-1939. Cooper Curtice papers, 1822-1953.
- Curtis, William Edmund, 1855-1923. William Edmund Curtis papers, 1885-1923.
- Curtis, William T. S. William T.S. Curtis papers.
- Cushing, Caleb, 1800-1879. Caleb Cushing papers, circa 1785-1906.
- Cushman, Charlotte, 1816-1876. Charlotte Cushman papers, 1823-1941.
- Custis family. Custis-Lee family papers, 1700-circa 1928.
- Custis, George Washington Parke, 1781-1857. George Washington Parke Custis papers.
- Custis-Lee family papers, 1700-circa 1928.
- Cutts family. Key-Cutts-Turner family papers, 1808-1975.
- Cutts, Richard, 1771-1845. Richard Cutts papers.
- Cyrus Robinson Miller papers, 1897-1940.
D
- Dahlgren, John Adolphus Bernard, 1809-1870. John Adolphus Bernard Dahlgren papers, 1794-1889.
- Damrosch, Frank, 1859-1937. Damrosch - Tee Van Collection. 1856-1969.
- Damrosch, Leopold, 1832-1885. Damrosch - Tee Van collection, 1856-1969.
- Damrosch - Tee Van collection, 1856-1969.
- Daniel Augustus Tompkins papers, 1887-1920.
- Daniel Carroll papers, 1662-1920.
- Daniel Dodge Brodhead papers, 1821-1853.
- Daniel Edgar Sickles papers, 1821-1918.
- Daniel O. Drennan papers, 1775-1904.
- Daniel Read Larned papers, 1861-1878.
- Daniel Scott Lamont papers, 1853-1928.
- Daniel Webster papers, 1800-1900.
- David Ames Wells papers, 1795-1898.
- David D. Porter family papers, 1799-1899.
- David Glasgow Farragut papers, 1816-1869.
- David Homer Bates papers, 1837-1926.
- David Murray papers, 1866-1930.
- Davis, J. C. Bancroft (John Chandler Bancroft), 1822-1907. J.C. Bancroft Davis papers, 1849-1902.
- Davis, Jefferson, 1808-1889. Jefferson Davis papers, 1795-1913.
- Day, William R. (William Rufus), 1849-1923. William R. Day papers, 1820-1923.
- De Forest, Lee, 1873-1961. Lee De Forest papers, 1884-1955.
- De Gurowski, Adam G., count, 1805-1866. Count Adam G. de Gurowski papers, 1743-1898.
- DeButts-Ely collection of Lee family papers, 1749-1914.
- Decatur, Stephen, 1779-1820. Stephen Decatur papers.
- Del Monte, Domingo, 1804-1853. Domingo Del Monte collection of Spanish colonial history, 1500-1871.
- Demens, Peter A., 1850-1919. Peter A. Demens papers, 1880-2000.
- Denby family. Denby family papers, 1850-1911.
- Denby family papers, 1850-1911.
- Dennett, Tyler, 1883-1949. Tyler Dennett collection relating to John Hay, 1861-1937.
- Denver, James William, 1817-1892. James William Denver papers, 1868-1884.
- Derrick, Clarence. Clarence Derrick papers.
- Derrick, Henry Clay, 1832-1915. Henry Clay Derrick papers, 1848-1994.
- Desha, John R., 1804-1878. Joseph Desha and John R. Desha papers. 1773-1871.
- Desha, Joseph, 1768-1842. Joseph Desha and John R. Desha papers, 1773-1871.
- Desha, Mary, 1850-1911. Mary Desha papers.
- Dessu, Ellen Key Turner, b. 1831. Ellen Key Turner Dessu papers.
- Dewey, George, 1837-1917. George Dewey papers, 1805-1949.
- Dewey, Mildred McLean Hazen, 1850-1931. Mildred McLean Hazen Dewey papers.
- Diaghilev, Serge, 1872-1929. Serge Diaghilev/Serge Lifar collection, 1750-1950.
- Dickerson, Edward E., 1831-1914. Edward E. Dickerson papers, 1861-1991.
- Dickerson, Wilton H. Wilton H. Dickerson papers.
- Dickinson, Anna E. (Anna Elizabeth), 1842-1932. Anna E. Dickinson papers, 1859-1951.
- Diggins, E. F. E.F. Diggins plaster bust of Walt Whitman. 1939.
- Dike, Samuel W. (Samuel Warren), 1839-1913. Samuel W. Dike papers, 1870-1913.
- District of Columbia. Levy Court (Washington County) District of Columbia. Levy Court (Washington County) minutes. 1835-1847.
- District of Columbia Woman Suffrage Association. District of Columbia Woman Suffrage Association records.
- Dixon Jones, Mary Amanda. Mary Amanda Dixon Jones papers, 1839-1925.
- Dock, Mira Lloyd, 1853-1945. Mira Lloyd Dock papers, 1814-1951.
- Domingo Del Monte collection of Spanish colonial history, 1500-1871.
- Donald Benham Civil War collection, 1806-1916.
- Donelson, Andrew Jackson, 1799-1871. Andrew Jackson Donelson papers, 1779-1943.
- Doolittle, James R. (James Rood), 1815-1897. James R. Doolittle papers, 1859-1927.
- Dorn, Edward John, 1854-1937. Edward John Dorn papers, 1868-1936.
- Dorsett, Edward Lee, 1883- Edward Lee Dorsett naval historical collection, 1814-1926.
- Douglass, Frederick, 1818-1895. Frederick Douglass papers, 1841-1967.
- Douglass, Helen, 1838-1903. Helen Douglass papers.
- Draper, Daniel, 1841-1931. Daniel Draper papers. 1861-1931.
- Draper family. John William Draper family papers, 1777-1951.
- Draper, Henry, 1837-1882. Henry Draper papers.
- Draper, John C. (John Christopher), 1835-1885. John C. Draper papers.
- Draper, John William, 1811-1882. John William Draper family papers, 1777-1951.
- Drennan, Daniel O., ca. 1840-1905. Daniel O. Drennan papers, 1775-1904.
- Dulany, Bladen, 1792-1856. Bladen Dulany papers, 1817-1855.
- Dunant, Edward. Edward Dunant papers.
- Duncan Emrich autograph album collection, 1843-1956.
- Dunlop family. Dunlop family papers, 1713-1930.
- Dunlop family papers, 1713-1930.
- Dunlop, Francis Key. Francis Key Dunlop papers. 1844.
- Dunlop, James, 1724-1790. James Dunlop papers.
- Dunlop, James, 1755-1824. James Dunlop papers.
- Dunlop, James, b. 1793. James Dunlop papers.
- Dunlop, Robert P., d. 1869. Robert P. Dunlop papers.
- Dunlop, William, fl. 1739. William Dunlop papers. 1847-1858.
- Dupuis-Delcourt, 1802-1864. Tissandier collection on the history of aeronautics. 1539-1929.
- Dupuy, Elisabeth, 1859-1932. Elisabeth Dupuy papers, 1892-1922.
- D.W. Whittle papers, 1861-1974.
- Dwight Lyman Moody papers, 1864-1937.
E
- E. Alexander Powell papers, 1893-1957.
- E. B. Washburne papers, 1829-1889.
- Earle, William E. (William Edward), 1841-1894. William E. Earle papers.
- Early, Jubal Anderson, 1816-1894. Jubal Anderson Early papers, 1829-1930.
- E.B. O'Callaghan papers, 1830-1879.
- Edgar Alexander Mearns papers, 1864-1918.
- Edgar Stanton Maclay papers, 1782-circa 1918.
- Edison Electric Light Company. Edison Electric Light Company records, 1879-1894.
- Edison Electric Light Company records, 1879-1894.
- Edison sheet music collection, 1830-1958.
- Edmund Clarence Stedman papers, 1871-1923.
- Edmund Physick family papers, 1759-1899.
- Edmund Ross Colhoun papers, 1821-1918.
- Edmund Ruffin diaries, 1856-1865.
- Edward Bates papers, 1818-1904.
- Edward E. Dickerson papers, 1861-1991.
- Edward Everett Hayden family papers, 1817-1963.
- Edward Frost papers, 1795-1901.
- Edward Goodrich Acheson papers, 1872-1968.
- Edward John Dorn papers, 1868-1936.
- Edward Lee Dorsett naval historical collection, 1814-1926.
- Edward Lee Plumb papers, 1825-1903.
- Edward Maynard papers, 1836-1867.
- Edward McPherson papers, 1738-1936.
- Edward Nealy Kellogg and Edward Stanley Kellogg papers, 1858-1937.
- Edward Settle Godfrey papers, 1863-1933.
- Edward Williams Morley papers, 1833-1923.
- Edward Willis papers, 1854-1906.
- Edwards Pierrepont papers, 1847-1900.
- Edwin Markham papers, circa 1893-1937.
- Edwin McMasters Stanton papers, 1818-1921.
- E.G. Squier papers, 1841-1888.
- Eli T. Sheppard papers, 1872-1924.
- Eliakim Littell correspondence, 1819-1869.
- Elihu Root papers, 1863-1937.
- Elijah Walker Halford papers, 1848-1938.
- Elisabeth Dupuy papers, 1892-1922.
- Elisha Hunt Allen papers, 1849-1934.
- Elizabeth Cady Stanton papers, 1814-1946.
- Elizur Wright papers, 1793-1935.
- Elliot, Charles N. (Charles Nathan), b. 1873. Charles N. Elliot collection, 1873-1951.
- Ellis & Allan Company records, 1795-1889.
- Ellis & Allan Company (Richmond, Va.). Ellis & Allan Company records, 1795-1889.
- Ellsworth family. Oliver Ellsworth family papers, 1762-1907.
- Ellsworth, Oliver, 1745-1807. Oliver Ellsworth family papers, 1762-1907.
- Emerson, Ralph Waldo, 1803-1882. Ralph Waldo Emerson journal.
- Emile Berliner collection, 1871-1965.
- Emily A. Stewart collection of Elihu Root material, 1885-1959.
- Emma Dorothy Eliza Nevitte Southworth papers, 1870-1918.
- Emmons, Samuel Franklin, 1841-1911. Samuel Franklin Emmons papers, 1725-1914.
- Emory, William H. (William Hemsley), 1846-1917. William H. Emory papers, 1877-1948.
- Emrich, Duncan, 1908-1977. Duncan Emrich autograph album collection, 1843-1956.
- Eno, Amos R. (Amos Richard), 1810-1898. Amos R. Eno papers.
- Eric Johnson collection of Ernest Bloch photographs, 1896-2008.
- Ericsson, John, 1803-1889. John Ericsson papers, 1821-1890.
- Ethan Allen Hitchcock papers, 1793-1888.
- Ethel Armes collection of Lee family papers, 1671-1936.
- Eugenio María de Hostos and Eugenio Carlos de Hostos papers, 1865-1990.
- Evans, Anna Maria, ca. 1828-ca. 1905. Anna Maria Evans papers, 1835-1914.
- Evarts, William Maxwell, 1818-1901. William Maxwell Evarts papers, 1667-1918.
- Evelyn Briggs Baldwin papers, 1649-1933.
- Evelyn Wadsworth Symington collection of John Hay material, 1864-1905.
- Everett, Alexander Hill, 1790-1847. Alexander Hill Everett papers.
- Ewing family. Thomas Ewing family papers, 1757-1941.
- Ewing, Hugh, 1826-1905. Hugh Ewing papers.
- Ewing, Thomas, 1789-1871. Thomas Ewing family papers, 1757-1941.
- Ewing, Thomas, 1829-1896. Thomas Ewing papers.
- Ewing, Thomas, 1862-1942. Thomas Ewing papers.
- Ezra Ayers Carman papers, 1861-1909.
F
- F. Lamson-Scribner papers, 1885-1938.
- Fairchild, Marian, 1880-1962. Marian Fairchild papers.
- Falls Bridge Turnpike Company. Falls Bridge Turnpike Company daybooks. 1836-1852.
- Farragut, David Glasgow, 1801-1870. David Glasgow Farragut papers, 1816-1869.
- Farrar, Geraldine, 1882-1967. Geraldine Farrar collection, 1895-1943.
- Feamster family. Feamster family papers. 1794-1967.
- Feamster family papers, 1794-1967.
- Federn, Paul. Paul Federn papers, 1864-1975.
- Feinberg, Charles E., 1899- Charles E. Feinberg papers.
- Feinberg, Charles E., 1899- Walt Whitman papers in the Charles E. Feinberg collection, 1763-1985.
- Fell, Jesse W., 1808-1887. Jesse W. Fell papers, 1806-1965.
- Felt, Joseph B. (Joseph Barlow), 1789-1869. Joseph Barlow Felt papers. 1822-1832.
- Fernández Carballido, Rufo Manuel, 1790-1855. Rufo Manuel Fernández Carballido papers.
- Fessenden, William Pitt, 1806-1869. William Pitt Fessenden papers, 1832-1878.
- Field family. Field-Osgood family papers, 1702-1938.
- Field-Osgood family papers, 1702-1938.
- Field, Susan K. Osgood. Susan K. Osgood Field papers.
- Fillebrown, Charles Bowdoin, 1842-1917. Charles Bowdoin Fillebrown papers, 1879-1928.
- Fish, Hamilton, 1808-1893. Hamilton Fish papers, 1732-1914.
- Fisher, A. K. (Albert Kenrick), 1856-1948. A.K. Fisher papers, 1827-1957.
- Fisher, Anne B. (Anne Benson), 1898- Anne B. Fisher papers.
- Fisher, George P. (George Purnell), 1817-1899. George P. Fisher papers, 1772-1905.
- Fisher, Walter K. (Walter Kenrick), 1878-1953. Walter K. Fisher papers.
- Fiske, Asa Severance, 1833-1925. Asa Severance Fiske papers.
- Fiske, Elizabeth Worthington Hand, 1835-1919. Elizabeth Worthington Hand Fiske papers.
- Fiske family. John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers. 1745-1966.
- Fiske, Harrison Grey, 1861-1942. Minnie Maddern Fiske and Harrison Grey Fiske papers, 1818-1955.
- Fiske, Minnie Maddern, 1865-1932. Minnie Maddern Fiske and Harrison Grey Fiske papers, 1818-1955.
- Fiske, Samuel Wheelock, 1828-1864. Samuel Wheelock Fiske papers.
- Fitz-John Porter papers, 1830-1949.
- F.L. and J.C. Olmsted (Firm : 1884-1889). F.L. and J.C. Olmsted (Firm : 1884-1889) records.
- F.L. and J.C. Olmsted (Firm : 1897-1898). F.L. and J.C. Olmsted (Firm : 1897-1898) records. (2)
- F.L. Olmsted and Company. F.L. Olmsted and Company records.
- Flaubert, Gustave, 1821-1880. Salammbo.
- Fleetwood, Christian A. (Christian Abraham), 1840-1914. Christian A. Fleetwood papers, 1797-1945.
- Fleetwood, Sara Iredell Sara Iredell Fleetwood papers.
- Fliess, Conrad. Reminiscences (undated).
- Fliess, Wilhelm, 1858-1928. Wilhelm Fliess papers, 1894-1929.
- Floyd, Charles Rinaldo, 1797-1845. Charles Rinaldo Floyd papers. 1816-1845.
- Floyd family. Campbell-Preston-Floyd families papers, 1741-1931.
- Floyd family. Floyd-McAdoo families papers, 1806-1894.
- Floyd, John, 1769-1839. John Floyd letterbooks and estate book. 1806-1830.
- Floyd-McAdoo families papers, 1806-1894.
- Foote, Andrew H. (Andrew Hull), 1806-1863. Andrew H. Foote papers, 1822-1890.
- Foraker, Joseph Benson, 1846-1917. Joseph Benson Foraker papers, 1884-1916.
- Forbes W. Manchester correspondence, 1858-1869.
- Ford, Annie. Annie E. Ford papers.
- Ford, John Thompson, 1829-1894. John Thompson Ford papers, 1809-1960.
- Ford, Lizzie. Lizzie Ford papers.
- Forster, Rudolph, 1872-1943. Rudolph Forster papers, 1898-1943.
- Foulke, William Dudley, 1848-1935. William Dudley Foulke papers, circa 1470-1952.
- Fowler, Joseph Smith, 1820-1902. Joseph Smith Fowler papers, 1863-1903.
- Fowler, William Chauncey, 1793-1881. William Chauncey Fowler papers.
- Fox, Gustavus Vasa, 1821-1883. Gustavus Vasa Fox papers.
- Fox, Virginia L. Woodbury Virginia L. Woodbury Fox correspondence and diary.
- Frances Benjamin Johnston papers, 1855-1956.
- Frances Carpenter collection relating to Frank G. Carpenter, 1875-1960.
- Francis Asbury Roe papers, 1842-1901.
- Francis Bowler Keene papers, 1856-1975.
- Francis L. Galt papers, 1870-1875.
- Francis Lewis Cardozo family papers, 1864-1968.
- Francis Winslow papers, 1833-1863.
- Frank Alden Hill genealogical collection, 1627-1897.
- Frank Hastings Hamilton papers, 1863-1887.
- Frank Knox papers, 1898-1954.
- Frank Lloyd Wright papers, 1894-1958.
- Frank M. Bennett papers, 1893-1909.
- Frank Maloy Anderson papers, circa 1895-circa 1961.
- Franklin Pierce papers, 1820-1869.
- Franz Boas papers, 1878-1943.
- Frederic, Harold, 1856-1898. Harold Frederic papers, 1891-1897.
- Frederic William Wile scrapbooks, 1898-1941.
- Frederick Albert Cook papers, 1881-1977.
- Frederick Douglass papers, 1841-1967.
- Frederick Joseph Libby papers, 1846-1973.
- Frederick Law Olmsted (Firm). Frederick Law Olmsted (Firm) records.
- Frederick Law Olmsted papers, 1777-1952.
- Frémont, Jessie Benton, 1824-1902. John Charles Frémont and Jessie Benton Frémont papers. 1828-1980.
- Frémont, John Charles, 1813-1890. John Charles Frémont and Jessie Benton Frémont papers, 1828-1980.
- French, Benjamin B. (Benjamin Brown), 1800-1870. Benjamin B. French family papers, 1778-1940.
- French family. Benjamin B. French family papers, 1778-1940.
- French, Francis O. (Francis Ormond), 1837-1893. Francis O. French papers.
- Freud, Alexander, 1866-1943. Alexander Freud and Sophie Schreiber Freud papers, 1872-1965.
- Freud, Sigmund, 1856-1939. Sigmund Freud papers, circa 6th century B.C.-1998.
- Freud, Sophie Schreiber, 1878-ca. 1965. Alexander Freud and Sophie Schreiber Freud papers. 1872-1965.
- Frič, Alberto Vojtěch, 1882-1944. Alberto Vojtěch Frič papers.
- Fromuth, Charles Henry, 1861-1937. Charles Henry Fromuth papers, 1884-1937.
- Frost, Edward, 1801-1868. Edward Frost papers, 1795-1901.
- Frost, Rufus S. Rufus S. Frost papers, 1841-1883.
- Fuller, Melville Weston, 1833-1910. Melville Weston Fuller papers, 1794-1949.
- Furness, Clifton Joseph, 1898-1946. Clifton Joseph Furness notebook. 1941.
G
- Gage, Lyman J. (Lyman Judson), 1836-1927. Lyman J. Gage correspondence, 1897-1906.
- Gallaudet, Edward Miner, 1837-1917. T.H. Gallaudet and Edward Miner Gallaudet papers. 1806-1958.
- Gallaudet, T. H. (Thomas Hopkins), 1787-1851. T.H. Gallaudet and Edward Miner Gallaudet papers, 1806-1958.
- Galloway family. Galloway-Maxcy-Markoe families papers, 1654-1888.
- Galloway, John, d. 1810. John Galloway papers.
- Galloway-Maxcy-Markoe families papers, 1654-1888.
- Galloway, Samuel, 1720-1785. Samuel Galloway papers.
- Galt, Francis L., 1831 or 32-1915. Francis L. Galt papers, 1870-1875.
- Garfield, Abram, b. 1872 Abram Garfield papers.
- Garfield, Harry Augustus, 1863-1942. Harry Augustus Garfield papers, 1855-1961.
- Garfield, Helen Newell, 1866-1930. Helen Newell Garfield papers.
- Garfield, Irvin McDowell, 1870-1951 Irvin McDowell papers.
- Garfield, James A. (James Abram), 1831-1881. James A. Garfield papers.
- Garfield, James A. (James Abram), 1831-1881. James A. Garfield papers, 1775-1889.
- Garfield, James Rudolph, 1865-1950. James Rudolph Garfield papers, 1879-1950.
- Garfield, Lucretia Rudolph, 1832-1918. Lucretia Rudolph Garfield papers.
- Garfield, Lucretia Rudolph, 1832-1918. Lucretia Rudolph Garfield papers, 1807-1958.
- Georg Martin Wunderlich papers, 1897-1951.
- George B. Cortelyou papers, 1871-1948.
- George Brinton McClellan papers, 1783-1898.
- George Creel papers, 1857-1953.
- George Dewey papers, 1805-1949.
- George E. Belknap papers, 1857-1903.
- George F. Becker papers, 1814-1928.
- George Foster Peabody papers, 1894-1937.
- George H. Stuart papers, 1792-1946.
- George Hodges collection, circa 1790-circa 1909.
- George Montfort Gilchrist family papers, 1854-1921.
- George Nicholas Sanders family papers, 1833-1973.
- George P. Fisher papers, 1772-1905.
- George P. Merrill correspondence and autographs, 1803-1926.
- George Peabody Wetmore papers, 1885-1916.
- George Pope Morris papers, 1832-1862.
- George Sabin Gibbs papers, 1896-1947.
- Georgetown and Leesburg Turnpike Company. Georgetown and Leesburg Turnpike Company daybooks. 1816-1836.
- Georgetown (Washington, D.C.). Board of Commissioners. Georgetown (Washington, D.C.) Board of Commissioners minutes. 1751-1789.
- Georgetown (Washington, D.C.) Corporation. Georgetown (Washington, D.C.) Corporation government records, 1751-1881.
- Georgetown (Washington, D.C.) Corporation government records, 1751-1881.
- Geraldine Farrar collection, 1895-1943.
- German captured documents collection, 1766-1945.
- Getty family. Gibson-Getty-McClure families papers, 1777-1926.
- Getty, George W. George W. Getty papers. 1847-1913.
- Gibbes, Lewis Reeves, 1810-1894. Lewis Reeves Gibbes papers, 1793-1894.
- Gibbs, George Sabin, 1875-1947. George Sabin Gibbs papers, 1896-1947.
- Gibson family. Gibson-Getty-McClure families papers, 1777-1926.
- Gibson-Getty-McClure families papers, 1777-1926.
- Giddings, Joshua R. (Joshua Reed), 1795-1864. Joshua R. Giddings and George Washington Julian papers, 1839-1899.
- Gideon Welles papers, 1777-1911.
- Giffard, Henri, 1825-1882. Henri Giffard papers, 1852-1910.
- Gifford Pinchot papers, 1770-1972.
- Gilbert, Cass, 1859-1934. Cass Gilbert papers, 1841-1961.
- Gilbert, Cass, b. 1894. Cass Gilbert letterbooks. 1936-1941.
- Gilchrist family. George Montfort Gilchrist family papers, 1854-1921.
- Gilchrist, George Montfort. George Montfort Gilchrist family papers, 1854-1921.
- Gillam, Chandler B., 1833-1899. Chandler B. Gillam papers, 1850-1919.
- Gillette, James Jenkins, d. 1881. James Jenkins Gillette papers, 1857-1884.
- Gilpin, Joshua, 1765-1840. Joshua Gilpin papers.
- Gladstone, William A., collector. Afro-American military collection, 1773-1987.
- Gleaves, Albert, 1858-1937. Albert Gleaves papers, 1803-1946.
- Godfrey, Edward Settle, 1843-1932. Edward Settle Godfrey papers, 1863-1933.
- Goldsborough, Louis Malesherbes, 1805-1877. Louis Malesherbes Goldsborough papers, 1797-1874.
- Goodell, William, 1792-1867. William Goodell papers, 1818-1917.
- Gould, Alice Bache, 1868-1953. Alice Bache Gould papers.
- Graf, Rosa Freud, 1860-ca. 1942. Rosa Freud Graf papers, 1879-1942.
- Grant, Julia Dent, 1826-1902. Julia Dent Grant correspondence and memoirs.
- Grant, Ulysses S. (Ulysses Simpson), 1822-1885. Ulysses S. Grant papers, 1819-1974.
- Gray, Asa, 1810-1888. Asa Gray papers, 1840-1859.
- G.R.B. Horner papers, 1826-1911.
- Greeley, Horace, 1811-1872. Horace Greeley papers, 1812-1928.
- Greely, A. W. (Adolphus Washington), 1844-1935. A.W. Greely papers, 1753-1959.
- Greely, Henrietta Hudson Cruger Nesmith. Henrietta Hudson Cruger Nesmith Greely papers. 1878-1918.
- Greenslade, John Wills, 1880-1950. John Wills Greenslade papers, 1847-1961.
- Gregg, Morris E. Morris E. Gregg papers.
- Gresham, LeRoy Wiley, 1847-1865. LeRoy Wiley Gresham papers.
- Gresham, Walter Quintin, 1832-1895. Walter Quintin Gresham papers, 1857-1932.
- Grosvenor, Edwin A. (Edwin Augustus), 1845-1936. Edwin A. Grosvenor papers.
- Grosvenor, Edwin Prescott, 1875-1930. Edwin Prescott Grosvenor papers.
- Grosvenor, Elsie May, 1878-1964. Elsie May Grosvenor papers.
- Grosvenor family. Grosvenor family papers, 1827-1981.
- Grosvenor family papers, 1827-1981.
- Grosvenor, Gilbert Hovey, 1875-1966. Gilbert Hovey Grosvenor papers.
- Grosvenor, Lilian Waters, 1852-1931. Lilian Waters Grosvenor papers.
- Grosvenor, Melville Bell, 1901-1982. Melville Bell Grosvenor papers.
- Grover Cleveland papers, 1743-1945.
- G.T. Beauregard papers, 1844-1883.
- Gustave Percival Wiksell papers, 1855-1939.
H
- Hack, Charles W. Charles W. Hack papers, circa 1800-1926.
- Hale, Edward Everett, 1822-1909. Edward Everett Hale papers.
- Hale family. Hale family papers, 1698-1916.
- Hale family papers, 1698-1916.
- Hale, Nathan, 1784-1863. Nathan Hale papers.
- Halford, Elijah Walker, 1843-1938. Elijah Walker Halford papers, 1848-1938.
- Hall, Asaph, 1829-1907. Asaph Hall papers, 1837-1983.
- Hall, Asaph, 1859-1930. Asaph Hall papers.
- Halleck, H. W. (Henry Wager), 1815-1872. H.W. Halleck papers, 1843-1896.
- Halsted B. VanderPoel literary collection, 1815-1929.
- Hamilton Fish papers, 1732-1914.
- Hamilton, Frank Hastings, 1813-1886. Frank Hastings Hamilton papers, 1863-1887.
- Hamlin, Anna, d. 1925. Anna Hamlin papers.
- Hamlin, Charles S. (Charles Sumner), 1861-1938. Charles S. Hamlin papers, 1869-1968.
- Hamlin, Huybertie Pruyn, 1873-1964. Huybertie Pruyn Hamlin papers.
- Hammer, Armand, 1898-1990. Armand Hammer papers, circa 1508-1989.
- Hammond, James Henry, 1807-1864. James Henry Hammond papers, 1774-1875.
- Hampton family. Wade Hampton family papers, 1855-1935.
- Hampton, Vernon Boyce, 1897- Vernon Boyce Hampton papers, 1872-1971.
- Hampton, Wade, 1818-1902. Wade Hampton family papers, 1855-1935.
- Hand, Catharine Worthington Fowler, 1801-1865. Catharine Worthington Fowler Hand papers.
- Hand family. John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers. 1745-1966.
- Hand, Joseph Winborn, 1792-1844. Joseph Winborn Hand papers.
- Hannah G. Solomon papers, 1817-1986.
- Hans Hermann Carl Ludwig, Graf von Berlepsch, correspondence, 1874-1913.
- Hapgood, Elizabeth Reynolds. Norman Hapgood and Elizabeth Reynolds Hapgood papers. 1824-1977.
- Hapgood, Norman, 1868-1937. Norman Hapgood and Elizabeth Reynolds Hapgood papers, 1824-1977.
- Harlan, James, 1800-1863. James Harlan papers. 1810-1863.
- Harlan, John Marshall, 1833-1911. John Marshall Harlan papers, 1810-1971.
- Harman Blennerhassett papers, 1755-1866.
- Harned, Thomas Biggs, b. 1851. Thomas Biggs Harned collection of Walt Whitman papers, 1842-1937.
- Harold Frederic papers, 1891-1897.
- Harriman, W. Averell (William Averell), 1891-1986. W. Averell Harriman papers, 1869-1988.
- Harrison, Benjamin, 1833-1901. Benjamin Harrison papers, 1780-1948.
- Harrison family. Short-Harrison-Symmes families papers, 1760-1878.
- Harrison, James O., 1804-1888. James O. Harrison papers, 1803-1912.
- Harrison, John Cleves Symmes, 1798-1830. John Cleves Symmes Harrison papers.
- Harrison, John Scott, 1804-1878. John Scott Harrison papers.
- Harrison, William Henry, 1773-1841. William Henry Harrison papers.
- Harrison, William Henry, 1802-1838. William Henry Harrison papers.
- Harry Augustus Garfield papers, 1855-1961.
- Harry Payne Whitney collection of letters of William Collins Whitney, 1757-1942.
- Harry S. Cummings papers, 1890-1986.
- Hart, Ira. Ira Hart sermon notes.
- Hartt, Charles Frederick, 1840-1878. Charles Frederick Hartt papers.
- Harvey, Charles Henry, 1830-1896. Charles Henry Harvey papers, 1835-1965.
- Harvey, Joanne. Joanne Harvey papers.
- Harvey Washington Wiley papers, 1854-1954.
- Harvey, Winfield S. Winfield S. Harvey papers.
- Harwood family. Harwood family papers, 1767-1940.
- Harwood family papers, 1767-1940.
- Hasse, Adelaide Rosalia, 1868-1953. Adelaide Rosalia Hasse papers, 1862-1951.
- Hasson, Esther Voorhees, 1867-1942. Esther Voorhees Hasson journal. 1899.
- Haupt, Herman, 1817-1905. Herman Haupt letterbook. 1861-1863.
- Haupt, Lewis M. (Lewis Muhlenberg), b. 1844. Lewis M. Haupt papers, 1849-1923.
- Hawley, Harriet Ward Foote, 1831-1886. Harriet Ward Foote Hawley papers.
- Hawley, Joseph R. (Joseph Roswell), 1826-1905. Joseph R. Hawley papers, 1638-1906.
- Hay, John, 1838-1905. John Hay papers.
- Hay, John, 1838-1905. John Hay papers, 1783-1999.
- Hayden, Alfred, b. 1894. Alfred Hayden papers.
- Hayden, Edward Everett, 1858-1932. Edward Everett Hayden family papers, 1817-1963.
- Hayden family. Edward Everett Hayden family papers, 1817-1963.
- Hayden, Herbert B. (Herbert Bainbridge), 1885-1969. Herbert B. Hayden papers.
- Hayden, Mary Bainbridge, b. 1895. Mary Bainbridge Hayden papers.
- Hayden, Reynolds, b. 1883. Reynolds Hayden papers.
- Hayden, William, 1795-1880. William Hayden papers.
- H.C. Taylor papers, 1862-1904.
- Heath, Perry S. (Perry Sanford), 1857-1927. Perry S. Heath papers, 1890-1983.
- Heintzelman, Samuel Peter, 1805-1880. Samuel Peter Heintzelman papers, 1822-1913.
- Helen Keller papers, 1842-1954.
- Hendrik Christian Andersen papers, 1844-1940.
- Henri Giffard papers, 1852-1910.
- Henry Bartholomew Cox collection, 1492-1960.
- Henry Clark Corbin papers, 1864-1980.
- Henry Clay Derrick papers, 1848-1994.
- Henry Clay family papers, 1732-1927.
- Henry Jackson Hunt papers, 1841-1978.
- Henry L. Abbot family papers, 1770-2001.
- Henry M. Robert papers, 1853-1937.
- Henry Morgenthau papers, 1795-1941.
- Henry Northrup Castle family papers, 1394-1920.
- Henry Pelham Holmes Bromwell papers, 1794-1929.
- Henry Rowe Schoolcraft papers, 1788-1941.
- Henry T. Allen papers, 1806-1933.
- Henry Walker correspondence, 1861-1864.
- Henry Ward Beecher papers, 1836-1886.
- Henry Ware Lawton papers, 1849-1930.
- Henry White papers, 1812-1931.
- Henry Woodhouse collection relating to George Washington, 1656-1930.
- Herbert Corey papers, 1847-1954.
- Herbert, Victor, 1859-1924. Victor Herbert collection, 1880-1939.
- Herman K. Crofoot collection of Francis Elias Spinner papers, 1792-1908.
- Herndon family. Charles Pinkerton collection of Arthur and Herndon family papers, 1822-1938.
- Herndon-Weik collection of Lincolniana, circa 1824-1933.
- Herndon, William Henry, 1818-1891. William Henry Herndon papers. 1849-1891.
- Hicks, W. L. (Washington L.), d. 1885 W.L. Hicks diary and correspondence. 1861-1866.
- Hill, Frank Alden. Frank Alden Hill genealogical collection, 1627-1897.
- Hillard, Harriet Low, 1809-1877. Harriet Low Hillard papers.
- Hitchcock, Ethan Allen, 1798-1870. Ethan Allen Hitchcock papers, 1793-1888.
- Hitchcock, Samuel, 1808-1851. Samuel Hitchcock papers.
- Hobson, Richmond Pearson, 1870-1937. Richmond Pearson Hobson papers, 1889-1966.
- Hodges collection, circa 1790-circa 1909.
- Hodges family collection, circa 1790-circa 1909.
- Hodges family. Hodges family collection, circa 1790-circa 1909.
- Hoe, Peter Smith, 1821-1902. Peter Smith Hoe papers.
- Hoe, Richard March, 1812-1886. Richard March Hoe papers.
- Hoe, Robert, 1815-1884. Robert Hoe papers.
- Hoe, Robert, 1839-1909. Robert Hoe papers.
- Hoes, Roswell Randall, 1850-1921. Roswell Randall Hoes papers, 1799-1912.
- Holden Chester Richardson papers, 1844-1946.
- Hollins, John. John Hollins papers.
- Hollins, Robert. Robert Hollins papers.
- Hollins, Thomas. Thomas Hollins papers.
- Holmes, Oliver Wendell, 1809-1894. Oliver Wendell Holmes papers, 1837-1931.
- Holt, Joseph, 1807-1894. Joseph Holt papers, 1817-1895.
- Hooper, Samuel, 1808-1875. Samuel Hooper papers, 1829-1874.
- Hopkins, Cornelia Lee, 1780-1815. Cornelia Lee Hopkins papers.
- Horace Capron papers, 1834-1961.
- Horace Greeley papers, 1812-1928.
- Horace H. Lurton papers, 1860-1915.
- Horace Porter papers, 1853-1922.
- Horace Traubel and Anne Montgomerie Traubel papers, 1824-1979.
- Horatio King papers, 1832-1906.
- Horner, G. R. B. (Gustavus Richard Brown), 1804-1892. G.R.B. Horner papers, 1826-1911.
- Horner, Mabel Carlton. Mabel Carlton Horner biography of Caleb Henry Carlton.
- Horsford-Tryon families papers, 1800-2000.
- Hostos, Eugenio Carlos de, 1879-1959. Eugenio María de Hostos and Eugenio Carlos de Hostos. 1865-1990.
- Hostos, Eugenio María de, 1839-1903. Eugenio María de Hostos and Eugenio Carlos de Hostos papers. 1865-1990.
- Hotchkiss, Jedediah, 1828-1899. Jedediah Hotchkiss papers, 1835-1908.
- Hotchkiss, Sara Anne Comfort. Sara Anne Comfort Hotchkiss papers.
- Houston, Charles Hamilton, 1895-1950. Charles Hamilton Houston papers. 1871-1935.
- Houston family. William LePre Houston family papers, 1777-1936.
- Houston, William LePre. William LePre Houston family papers, 1777-1936.
- Howard, Barnett Allen, b. 1827. Barnett Allen Howard papers, 1885-1949.
- Howard family. Howard-von Recum family papers, 1869-1972.
- Howard, Henry, Sir, 1843-1921. Howard-von Recum family papers, 1869-1972.
- Howard-von Recum family papers, 1869-1972.
- Howe, Julia Ward, 1819-1910. Julia Ward Howe papers, 1845-1917.
- Howe, Letitia T. Letitia T. Howe collection, 1822-1876.
- Hoxie, R. L. (Richard Leveridge), 1844-1930. Vinnie Ream and Richard Leveridge Hoxie papers. 1853-1937.
- Hubbard family papers, 1639-1925.
- Hubbard, Gardiner G. (Gardiner Greene), 1822-1897. Gardiner G. Hubbard papers. (2)
- Hubbard, Gertrude Mercer McCurdy, 1827-1909. Gertrude Mercer McCurdy Hubbard papers.
- Hubbard, Samuel, 1785-1847. Samuel Hubbard papers.
- Hugh Lenox Scott papers, 1582-1981.
- Hugh T. Taggart collection relating to the District of Columbia and Maryland, 1751-1889.
- Hughes, Robert Patterson, 1839-1909. Robert Patterson Hughes papers, 1876-1994.
- Hugo Leichtentritt papers, 1888-1972.
- Humphrey Marshall papers, 1771-2002.
- Hunsberger, George S., 1914- George S. Hunsberger papers.
- Hunt, Henry Jackson, 1819-1889. Henry Jackson Hunt papers, 1841-1978.
- H.W. Halleck papers, 1843-1896.
I
- Ingersoll, Robert Green, 1833-1899. Robert Green Ingersoll papers, 1826-1940.
- Ingersoll, Royal E. (Royal Eason), 1883-1976. Royal Rodney Ingersoll and Royal E. Ingersoll papers. 1884-1931.
- Ingersoll, Royal Rodney, 1847-1931. Royal Rodney Ingersoll and Royal E. Ingersoll papers, 1866-1935.
- Institute of Aerospace Sciences archives, 1783-1962.
- Institute of the Aerospace Sciences. Institute of the Aerospace Sciences archives.
- Irene Aloha Wright papers, 1620-1977.
- Irving Langmuir papers, 1871-1957.
- Israel Perlstein collection relating to Imperial Russia, 1613-1914.
- Isthmian Canal Commission (U.S.) Isthmian Canal Commission (U.S.) records.
- Izard, Elizabeth Byrd Carter Shippen. Elizabeth Byrd Carter Shippen Izard papers.
J
- J. M. Mason papers, 1838-1870.
- Jacob A. Riis papers, 1870-1990.
- Jacobs-Bond, Carrie, 1862-1946. Carrie Jacobs-Bond collection, circa 1896-circa 1944.
- Jacobs-Bond collection, circa 1896-circa 1944.
- Jacques Loeb papers, 1889-1924.
- James A. Bayard and Richard H. Bayard papers, 1797-1885.
- James A. Garfield papers, 1775-1889.
- James Buchanan and Harriet Lane Johnston papers, 1825-1887.
- James Dodson Barbee and David Rankin Barbee papers, 1784-1953.
- James Fowler Simmons papers, 1771-1939.
- James Gillespie Blaine family papers, 1777-1945.
- James Gordon Bennett papers, 1845-1934.
- James H. Sherman correspondence, 1873-1876.
- James Harrison Wilson papers, circa 1862-1923.
- James, Henry, 1879-1947. Henry James research files.
- James Henry Hammond papers, 1774-1875.
- James Jenkins Gillette papers, 1857-1884.
- James McKeen Cattell papers, 1835-1948.
- James O. Harrison papers, 1803-1912.
- James R. Doolittle papers, 1859-1927.
- James R. Mann papers, 1887-1922.
- James Rudolph Garfield papers, 1879-1950.
- James Thomas Ward papers, 1838-1897.
- James Wadsworth family papers, 1730-1959.
- James Whitcomb Riley papers, 1883-1915.
- James William Denver papers, 1868-1884.
- Jarnac, Charles Rosalie de Rohan-Chabot, comte de. Charles Rosalie de Rohan-Chabot, comte de Jarnac, papers.
- Jarnac, Louis Charles Guillaume de Rohan-Chabot, comte de, 1780-1875. Louis Charles Guillaume de Rohan-Chabot, comte de Jarnac, papers.
- Jarnac, Philippe-Ferdinand-Auguste de Rohan-Chabot, comte de, 1815-1875. Philippe-Ferdinand-Auguste de Rohan-Chabot, comte de Jarnac, papers.
- J.C. Bancroft Davis papers, 1849-1902.
- Jeannette Thurber Connor collection of Floridiana, 1570-1927.
- Jedediah Hotchkiss papers, 1835-1908.
- Jefferson Davis papers, 1795-1913.
- Jelliffe, Helena Dewey Leeming, d. 1916. Correspondence and diary.
- Jelliffe, Smith Ely, 1866-1945. Smith Ely Jelliffe papers, 1882-1977.
- Jennie Lorenz collection relating to Charlotte Cushman, 1830-1960.
- Jeremiah S. Black papers, 1813-1904.
- Jesse W. Fell papers, 1806-1965.
- Jesup, Thomas Sidney, 1788-1860. Thomas Sidney Jesup papers, 1780-1907.
- Job Pierson family papers, 1755-1908.
- John Adolphus Bernard Dahlgren papers, 1794-1889.
- John A.J. Creswell papers, 1819-1885.
- John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers, 1745-1966.
- John Alexander Logan family papers, 1836-1925.
- John Austin Moon papers, 1832-1921.
- John Callan O'Laughlin papers, 1895-1949.
- John Charles Frémont and Jessie Benton Frémont papers, 1828-1980.
- John Davis Batchelder collection of manuscripts, 1537-1944.
- John Dean Caton papers, 1826-1947.
- John Ericsson papers, 1821-1890.
- John G. Nicolay papers, 1811-1943.
- John Grimes Walker papers, 1873-1903.
- John H. Wheeler papers, 1825-1882.
- John Hay papers, 1783-1999.
- John J. Crittenden papers, 1782-1913.
- John James Beckley family papers, 1789-1918.
- John Lowe papers, 1860-1945.
- John Marshall Harlan papers, 1810-1971.
- John McLean papers, 1817-1861.
- John Merven Carrère papers, 1894-1911.
- John Russell Young papers, circa 1840-1959.
- John Sherman papers, 1836-1900.
- John Singleton Mosby papers, 1861-1904.
- John Spencer Bassett papers, 1770-1978.
- John Thompson Ford papers, 1809-1960.
- John Tyler Morgan papers, 1840-1907.
- John Tyler papers, 1691-1918.
- John Vance Cheney papers, 1847-1927.
- John Warren Williams family papers, 1839-1895.
- John William Draper family papers, 1777-1951.
- John Wills Greenslade papers, 1847-1961.
- Johnson, Adelaide, 1859-1955. Adelaide Johnson papers, 1873-1947.
- Johnson, Andrew, 1808-1875. Andrew Johnson papers, 1783-1947.
- Johnson, Eric. Eric Johnson collection of Ernest Bloch photographs, 1896-2008.
- Johnson, Reverdy, 1796-1876. Reverdy Johnson papers, 1830-1876.
- Johnston, Frances Benjamin, 1864-1952. Frances Benjamin Johnston papers, 1855-1956.
- Johnston, Harriet Lane, 1830-1903. James Buchanan and Harriet Lane Johnston papers. 1825-1887.
- Johnston, John, 1762-1828. John Johnston papers.
- Johnston, John, 1852-1927. John Johnston papers.
- Johnston, Mercer Green, 1868-1954. Mercer Green Johnston papers, 1860-1954.
- Jonathan D. Meredith papers, 1795-1859.
- Josef Breuer papers, 1859-1970.
- Joseph Benson Foraker papers, 1884-1916.
- Joseph Bloomfield Osborn papers, 1862-1865.
- Joseph Desha and John R. Desha papers, 1773-1871.
- Joseph Hodges Choate papers, 1745-1929.
- Joseph Holt papers, 1817-1895.
- Joseph J. Roberts family papers, 1839-2001.
- Joseph Meredith Toner collection of manuscripts, 1741-1896.
- Joseph Pulitzer papers, 1880-1924.
- Joseph R. Hawley papers, 1638-1906.
- Joseph Sanford Wade papers, 1898-1955.
- Joseph Smith Fowler papers, 1863-1903.
- Joseph Stanley-Brown papers, 1730-1941.
- Joseph Strauss papers, 1884-1949.
- Joseph Warren Beach papers, 1891-1955.
- Joseph Warren Keifer papers, 1850-1865.
- Joshua Lawrence Chamberlain papers, 1775-1913.
- Joshua R. Giddings and George Washington Julian papers, 1839-1899.
- Josiah Bartlett family papers, 1710-1931.
- Jubal Anderson Early papers, 1829-1930.
- Julia Ward Howe papers, 1845-1917.
- Julian, George Washington, 1817-1899. Joshua R. Giddings and George Washington Julian papers. 1839-1899.
- Justin G. Turner autograph collection, 1763-1968.
- Justin S. Morrill papers, 1825-1923.
K
- Kalisky, Louisa, fl. 1823-1827. Louisa Kalisky papers.
- Kauffmann, Samuel Hay, 1829-1906. Samuel Hay Kauffmann papers, 1871-1896.
- Kautz, Albert, 1839-1907. Albert Kautz papers.
- Kautz, August V. (August Valentine), 1828-1895. August V. Kautz papers, 1846-1939.
- Keene, Francis Bowler, 1856-1945. Francis Bowler Keene papers, 1856-1975.
- Keidel family. Keidel family papers, 1821-1937.
- Keidel family papers, 1821-1937.
- Keidel, George C. (George Charles), 1868-1942. George C. Keidel papers. 1821-1934.
- Keifer, Joseph Warren, 1836-1932. Joseph Warren Keifer papers, 1850-1865.
- Keller, Helen, 1880-1968. Helen Keller papers, 1842-1954.
- Kellogg, Edward Nealy, 1841-1874. Edward Nealy Kellogg and Edward Stanley Kellogg papers, 1858-1937.
- Kellogg, Edward Stanley, 1870-1948. Edward Nealy Kellogg and Edward Stanley Kellogg papers. 1858-1937.
- Kendall, Amos, 1789-1869. Amos Kendall papers, 1835-1909.
- Kennedy, J. C. G. (Joseph Camp Griffith), 1813-1887. J.C.G. Kennedy diary. 1851.
- Key-Cutts-Turner family papers, 1808-1975.
- Key family. Key-Cutts-Turner family papers, 1808-1975.
- Key, Francis Scott, 1779-1843. Francis Scott Key papers.
- King family. Nicholas King family papers, 1792-1987.
- King, Horatio, 1811-1897. Horatio King papers, 1832-1906.
- King, N. (Nicholas), 1771-1812. Nicholas King family papers, 1792-1987.
- King, Rt. (Robert), 1774 or 5-1831. Rt. King survey notes. 1793-1795.
- Kirk Munroe papers, 1850-1940.
- Kline, Burton, 1877-1958. Burton Kline papers, 1896-1954.
- Knox, Annie Reid, 1876-1958. Annie Reid Knox papers. 1936-1954.
- Knox, Frank, 1874-1944. Frank Knox papers, 1898-1954.
- Koller, Carl, 1857-1944. Carl Koller papers, 1866-1988.
L
- La Fayette, Michel Louis Christophe Roch Gilbert Motier, marquis de, 1732-1759. Michel Louis Christophe Roch Gilbert Motier, marquis de La Fayette, papers.
- La Tour-Maubourg, Anastasie du Motier de La Fayette, comtesse de, 1777-1863. Anastasie du Motier de La Fayette, comtesse de La Tour-Maubourg, papers.
- Lafayette, Georges Washington Louis Gilbert Du Motier, marquis de, 1779-1849. Georges Washington Louis Gilbert Du Motier, marquis de Lafayette, papers.
- Lafayette, Marie Adrienne de Noailles, marquise de, 1759-1807. Marie Adrienne de Noailles, marquise de Lafayette, papers.
- Lafayette, Marie Joseph Paul Yves Roch Gilbert Du Motier, marquis de, 1757-1834. Marie Joseph Paul Yves Roch Gilbert Du Motier, marquis de Lafayette, papers, 1776-1934.
- Lafayette, Marie Joseph Paul Yves Roch Gilbert Du Motier, marquis de, 1757-1834. Marquis de Lafayette papers, 1757-1990.
- Lamont, Daniel Scott, 1851-1905. Daniel Scott Lamont papers, 1853-1928.
- Lamson-Scribner, F. F. Lamson-Scribner papers, 1885-1938.
- Lane, J. F., fl. 1834-1835. J.F. Lane letterbook. 1834-1835.
- Langmuir, Irving, 1881-1957. Irving Langmuir papers, 1871-1957.
- Larned, Daniel Read. Daniel Read Larned papers, 1861-1878.
- Lasteyrie du Saillant, Adrien-Jules, marquis de, 1810-1883. Adrien-Jules, marquis de Lasteyrie du Saillant, papers.
- Lasteyrie du Saillant, Louis, marquis de, 1781-1826. Louis, marquis de Lasteyrie du Saillant, papers.
- Lasteyrie du Saillant, Olivia de Rohan-Chabot, marquise de, 1813-1899. Olivia de Rohan-Chabot, marquise de Lasteyrie du Saillant, papers.
- Lasteyrie du Saillant, Virginie du Motier de La Fayette, marquise de, 1782-1849. Virginie du Motier de La Fayette, marquise de Lasteyrie du Saillant, papers.
- Latty, A. Sankey (Alexander Sankey). A. Sankey Latty papers, 1851-1890.
- Laura Wood Roper papers, 1822-1982.
- Lauro Ayestarán collection, 1830-1966.
- Law, Elizabeth Parke Custis, 1776-1832. Elizabeth Parke Custis Law papers.
- Lawton, Eba Anderson, d. 1919. Eba Anderson Lawton papers.
- Lawton, Henry Ware, 1843-1899. Henry Ware Lawton papers, 1849-1930.
- Le Garrec, Mary Virginia Foreman. Mary Virginia Foreman Le Garrec collection of Artur Schnabel materials.
- Le Gendre, Charles William, 1830-1899. Charles William Le Gendre papers, 1866-1893.
- Learned, Henry Barrett, 1868-1931. Henry Barrett Learned papers.
- Lee, Ann Hill Carter, 1773-1829. Ann Hill Carter Lee papers. (2)
- Lee, Anne Robinson McCarty, 1798-1840. Anne Robinson McCarty Lee papers. (2)
- Lee, Arthur, 1740-1792. Arthur Lee papers.
- Lee, Charles, 1758-1815. Charles Lee papers.
- Lee, Charles Carter, 1798-1871. Charles Carter Lee papers.
- Lee De Forest papers, 1884-1955.
- Lee, Elizabeth Collins, d. 1858. Elizabeth Collins Lee papers.
- Lee family. Custis-Lee family papers, 1700-circa 1928.
- Lee family. DeButts-Ely collection of Lee family papers, 1749-1914.
- Lee family. Ethel Armes collection of Lee family papers, 1671-1936.
- Lee family. Lee-Palfrey families papers, 1780-1932.
- Lee, Hannah Philippa Ludwell. Hannah Philippa Ludwell Lee papers.
- Lee, Henrietta Bedinger, b. 1810. Henrietta Bedinger Lee papers.
- Lee, Henry, 1691-1747. Henry Lee papers.
- Lee, Henry, 1756-1818. Henry Lee papers. (2)
- Lee, Henry, 1787-1837. Henry Lee papers.
- Lee, Ludwell, 1760-1836. Ludwell Lee papers.
- Lee, Mary Bland, 1704-1764. Mary Bland Lee papers.
- Lee, Mary Custis, 1835-1918. Mary Custis Lee papers.
- Lee, Mary Randolph Custis, 1807-1873. Mary Randolph Custis Lee papers. (2)
- Lee-Palfrey families papers, 1780-1932.
- Lee, Richard Bland, 1761-1827. Richard Bland Lee papers. (2)
- Lee, Richard Henry, 1732-1794. Richard Henry Lee papers.
- Lee, Richard Henry, 1794-1865. Richard Henry Lee papers.
- Lee, Robert E. (Robert Edward), 1807-1870. Robert E. Lee papers. (2)
- Lee, Samuel Phillips, 1812-1897. Samuel Phillips Lee papers, 1860-1869.
- Lee, Susan Palfrey, 1767-1822. Susan Palfrey Lee papers.
- Lee, Thomas, 1690-1750. Thomas Lee papers. (2)
- Lee, William, 1739-1795. William Lee papers.
- Lee, William, 1772-1840. William Lee papers.
- Lee, William Henry Fitzhugh, 1837-1891. William Henry Fitzhugh Lee papers.
- Leech, Abraham. Abraham Leech correspondence and diary. 1837-circa 1881.
- Leichtentritt, Hugo, 1874-1951. Hugo Leichtentritt papers, 1888-1972.
- Leontiĭ, Metropolitan of All America and Canada, 1876-1965. Leontiĭ, Metropolitan of All America and Canada, papers, 1855-1962.
- Leontiĭ, Metropolitan of All America and Canada, papers, 1855-1962.
- Lester Frank Ward papers, 1883-1906.
- Letitia T. Howe collection, 1822-1876.
- Levi Woodbury family papers, 1638-1914.
- Levisee, Aaron Burton. Aaron Burton Levisee papers, 1847-1992.
- Lewis H. Machen family papers, 1802-1938.
- Lewis M. Haupt papers, 1849-1923.
- Lewis Reeves Gibbes papers, 1793-1894.
- Lewis Tappan papers, 1809-1903.
- Lewis Whitfield Colson papers, 1894-1950.
- Libby, Abial. Abial Libby diary. 1862.
- Libby, Frederick J. (Frederick Joseph), 1874-1970. Frederick Joseph Libby papers, 1846-1973.
- Library of Congress. Copyright Office. Reader's collection, Library of Congress Copyright Office drama deposits, 1863-1928.
- Lifar, Serge, 1905-1986. Serge Diaghilev/Serge Lifar collection. 1750-1950.
- Lincoln, Abraham, 1809-1865. Abraham Lincoln correspondence. 1864 July 9.
- Lincoln, Abraham, 1809-1865. Abraham Lincoln papers.
- Lincoln, Abraham, 1809-1865. Abraham Lincoln papers, 1774-1948.
- Lincoln, Abraham, 1809-1865. Abraham Lincoln papers. 1824-1865.
- Littell, Eliakim, 1797-1870. Eliakim Littell correspondence, 1819-1869.
- Livermore, Eunice. Eunice Livermore papers.
- Livermore, Isaac. Isaac Livermore papers.
- Livingston, Anne Home Shippen, 1763-1841. Anne Home Shippen Livingston papers. (2)
- Loeb, Jacques, 1859-1924. Forced movements, tropisms, and animal conduct. 1918.
- Loeb, Jacques, 1859-1924. Jacques Loeb papers, 1889-1924.
- Loeb, Jacques, 1859-1924. Proteins and the theory of colloidal behavior. 1922.
- Loeb, Jacques, 1859-1924. Regeneration from a physico-chemical viewpoint. 1924.
- Logan family. John Alexander Logan family papers, 1836-1925.
- Logan, John A., Mrs., 1838-1923. Mrs. John A. Logan papers.
- Logan, John Alexander, 1826-1886. John Alexander Logan family papers, 1836-1925.
- Logan, John Alexander, 1865-1899. John Alexander Logan papers.
- Logan Pearsall Smith papers, 1760-1946.
- Loines, Mary Hillard, 1844-1944. Mary Hillard Loines papers.
- Longworth, Alice Roosevelt, 1884-1980. Alice Roosevelt Longworth papers, 1888-1942.
- Loper family. Palmer-Loper family papers, 1667-1994.
- Loper, R. F. (Richard F.) R.F. Loper papers.
- Lorenz, Jennie, 1886-1962. Jennie Lorenz collection relating to Charlotte Cushman, 1830-1960.
- Louis Malesherbes Goldsborough papers, 1797-1874.
- Louis McLane correspondence, 1795-1894.
- Louis-Pierre Mouillard papers, 1833-1987.
- Louise Chandler Moulton papers, 1852-1908.
- Low, Abiel Abbot, 1811-1893. Abiel Abbot Low papers.
- Low, Edward Allen, 1817-1898. Edward Allen Low papers.
- Low family. Low-Mills family papers, 1767-1971.
- Low-Mills family papers, 1767-1971.
- Lowe, John, 1838-1930. John Lowe papers, 1860-1945.
- Luce, Stephen Bleecker, 1827-1917. Stephen Bleecker Luce papers, 1799-1955.
- Lucian Barbour papers, 1838-1977.
- Lucretia Rudolph Garfield papers, 1807-1958.
- Lurton, Horace H. (Horace Harmon), 1844-1914. Horace H. Lurton papers, 1860-1915.
- Luther Burbank papers, 1830-1989.
- Lyman J. Gage correspondence, 1897-1906.
- Lyman Potter Spencer papers, 1856-1914.
- Lyman Trumbull correspondence, 1843-1894.
M
- Mabel Thorp Boardman papers, 1853-1945.
- Machen, Arthur Webster, 1827-1919. Arthur Webster Machen papers.
- Machen, Caroline Webster. Caroline Webster Machen papers.
- Machen, Emmeline. Emmeline Machen papers.
- Machen family. Lewis H. Machen family papers, 1802-1938.
- Machen, James P. James P. Machen papers.
- Machen, Lewis H. (Lewis Henry), 1790-1863. Lewis H. Machen family papers, 1802-1938.
- Machen, Minnie J. Gresham. Minnie J. Gresham Machen papers.
- Maclay, Edgar Stanton, 1863-1919. Edgar Stanton Maclay papers, 1782-circa 1918.
- Macomb, Alexander, 1888-1970. Alexander Macomb papers.
- Macomb, Ann Minerva Rodgers, 1824-1916. Ann Minerva Rodgers Macomb papers.
- Macomb, Christina, 1861-1945. Christina Macomb papers.
- Macomb, Nannie, 1864-1952. Nannie Macomb papers.
- Mahan, A. T. (Alfred Thayer), 1840-1914. A.T. Mahan papers, 1779-1970.
- Manchester, Forbes W. Forbes W. Manchester correspondence, 1858-1869.
- Mann, James R. (James Robert), 1856-1922. James R. Mann papers, 1887-1922.
- Mannes, David, 1866-1959. Mannes - Damrosch collection.
- Mansfield, Richard, 1857-1907. Paul Wilstach collection of Richard Mansfield papers. 1889-1918.
- Manton Marble papers, 1838-1916.
- Marble, Manton, 1834-1917. Manton Marble papers, 1838-1916.
- Marburg, Theodore, 1862-1946. Theodore Marburg papers, 1859-1940.
- Marian S. Carson collection of manuscripts, 1656-1995.
- Marie Joseph Paul Yves Roch Gilbert Du Motier, marquis de Lafayette, papers, 1776-1934.
- Markham, Edwin, 1852-1940. Edwin Markham papers, circa 1893-1937.
- Markoe family. Galloway-Maxcy-Markoe families papers, 1654-1888.
- Markoe, Francis, 1801-1871. Francis Markoe papers.
- Markoe, Sophie D. Sophie D. Markoe papers. 1852-1911.
- Marquis de Lafayette papers, 1757-1990.
- Marshall family. Humphrey Marshall papers, 1771-2002.
- Marshall, Humphrey, 1812-1872. Humphrey Marshall papers, 1771-2002.
- Marshall P. Wilder papers, 1880-1914.
- Marston, Philip Bourke, 1850-1887. Philip Bourke Marston papers.
- Marston, Westland, 1819-1890. Westland Marston papers.
- Martin Oviatt papers, 1863-1995.
- Mary Amanda Dixon Jones papers, 1839-1925.
- Mary Ann Bickerdyke papers, 1847-1905.
- Mary Church Terrell papers, 1851-1962.
- Mary Edith Powel naval historical collection, 1747-1922.
- Mary French Sheldon papers, 1885-1938.
- Maryland Insurance Company. Maryland Insurance Company records.
- Mason, Charles, 1804-1882. Charles Mason papers.
- Mason family. Charles Mason Remey family papers, 1778-1949.
- Mason, J. M. (James Murray), 1798-1871. J. M. Mason papers, 1838-1870.
- Massachusetts Colonization Society. Massachusetts Colonization Society letterbooks. 1856-1875.
- Matthew C. Brown and John C. Brown papers, 1862-1901.
- Matthew Fontaine Maury papers, 1825-1960.
- Matthew Simpson papers, 1829-1927.
- Matthew Stanley Quay papers, 1776-1949.
- Maud Wood Park papers, 1844-1979.
- Maugham, W. Somerset (William Somerset), 1874-1965. W. Somerset Maugham papers, 1897-1966.
- Maury, Matthew Fontaine, 1806-1873. Matthew Fontaine Maury papers, 1825-1960.
- Maxcy family. Galloway-Maxcy-Markoe families papers, 1654-1888.
- Maxcy, Virgil, 1785-1844. Virgil Maxcy papers.
- Maynard, Edward, 1813-1891. Edward Maynard papers, 1836-1867.
- McAdoo family. Floyd-McAdoo families papers, 1806-1894.
- McAdoo, Mary Faith Floyd, 1832-1913. Mary Faith Floyd McAdoo diaries. 1870-1891.
- McAdoo, W. G. (William Gibbs), 1820-1894. W.G. McAdoo diaries. 1846-1894.
- McBride, James, 1784-1817. James McBride papers. 1808-1817.
- McClellan, Ellen Marcy, 1838-1907. Ellen Marcy McClellan diaries. 1865.
- McClellan, George Brinton, 1826-1885. George Brinton McClellan papers, 1783-1898.
- McClure, Charles, 1838-1902. Charles McClure papers. 1849-1926.
- McClure family. Gibson-Getty-McClure families papers, 1777-1926.
- McCook family. McCook family papers, 1809-1966.
- McCook family papers, 1809-1966.
- McCormick and Carey families papers, 1852-1987.
- McCormick family. McCormick and Carey families papers, 1852-1987.
- McCormick, William, 1834-1863. William McCormick papers.
- McCreary, Robert G., d. 1883. Robert G. McCreary papers. 1785-1879.
- McCurdy, Robert Henry, 1800-1880. Robert Henry McCurdy papers.
- McGee, Anita Newcomb, 1864-1940. Anita Newcomb McGee papers, 1688-1932.
- McGee, W J, 1853-1912. W J McGee papers, 1880-1916.
- McKim, Alexander, 1748-1832. Alexander McKim papers.
- McKim, Charles Follen, 1847-1909. Charles Follen McKim papers, 1838-1929.
- McKinley, William, 1843-1901. William McKinley papers, circa 1847-1935.
- McLain, William. William McLain papers. 1831-1850.
- McLane, Louis, 1786-1857. Louis McLane correspondence, 1795-1894.
- McLean, Andrew. Andrew McLean papers. 1774-1780.
- McLean, John, 1785-1861. John McLean papers. 1813-1829.
- McLean, John, 1785-1861. John McLean papers, 1817-1861.
- McPherson, Edward, 1830-1895. Edward McPherson papers, 1738-1936.
- Mearns, Edgar Alexander, 1856-1916. Edgar Alexander Mearns papers, 1864-1918.
- Medill, William, 1802-1865. William Medill papers, 1834-1864.
- Meier, Nellie Simmons, d. 1939. Nellie Simmons Meier papers, 1898-1938.
- Meigs, Montgomery, 1847-1931. Montgomery Meigs papers.
- Meigs, Montgomery C. (Montgomery Cunningham), 1816-1892. Montgomery C. Meigs papers, 1799-1971.
- Meigs, Return Jonathan, 1740-1823. Return Jonathan Meigs papers.
- Meigs, Return Jonathan, 1764-1825. Return Jonathan Meigs papers.
- Melville Weston Fuller papers, 1794-1949.
- Mercer Green Johnston papers, 1860-1954.
- Mercy-Argenteau family papers, 1410-1921.
- Mercy family. Mercy-Argenteau family papers, 1410-1921.
- Meredith, Jonathan D., 1783-1872. Jonathan D. Meredith papers, 1795-1859.
- Merrill, George P. (George Perkins), 1854-1929. George P. Merrill correspondence and autographs, 1803-1926.
- Miles-Cameron families correspondence, 1661-1956.
- Miles family. Miles-Cameron families correspondence, 1661-1956.
- Miles, Nelson Appleton, 1839-1925. Miles-Cameron families correspondence, 1661-1956.
- Miller, Cyrus Robinson, 1874-1947. Cyrus Robinson Miller papers, 1897-1940.
- Miller, Samuel Freeman, 1816-1890. Samuel Freeman Miller correspondence and diaries, 1854-1887.
- Mills family. Low-Mills family papers, 1767-1971.
- Miner, Myrtilla, 1815-1864. Myrtilla Miner papers, 1825-1960.
- Minnie Maddern Fiske and Harrison Grey Fiske papers, 1818-1955.
- Minter, Joseph F. Joseph F. Minter papers.
- Mira Lloyd Dock papers, 1814-1951.
- Mitchell, Samuel Chiles, 1864-1948. Unpublished biography of Robert C. Ogden.
- Moldenhauer archives at the Library of Congress, circa 1000-circa 1990.
- Moldenhauer, Hans. Moldenhauer archives at the Library of Congress, circa 1000-circa 1990.
- Montgomery C. Meigs papers, 1799-1971.
- Montgomery Meigs Taylor papers, 1890-1935.
- Montgomery Sicard papers, 1800-1948.
- Moody, Dwight Lyman, 1837-1899. Dwight Lyman Moody papers, 1864-1937.
- Moon, John Austin, 1855-1921. John Austin Moon papers, 1832-1921.
- Moore, John Bassett, 1860-1947. John Bassett Moore file. 1732-1914.
- Moore, William G. (William George), 1829-1898. William G. Moore diaries.
- Moorfield Storey papers, 1876-1929.
- Moral Re-armament (Organization). Moral Re-armament records, 1812-1991.
- Moral Re-armament records, 1812-1991.
- Mordecai, Alfred, 1804-1887. Alfred Mordecai papers, 1790-1948.
- Morgan, John Tyler, 1824-1907. John Tyler Morgan papers, 1840-1907.
- Morgan, William Ferguson. William Ferguson Morgan autograph collection. 1746-1938.
- Morgenthau, Henry, 1856-1946. Henry Morgenthau papers, 1795-1941.
- Morley, Edward Williams, 1838-1923. Edward Williams Morley papers, 1833-1923.
- Morrill, Justin S. (Justin Smith), 1810-1898. Justin S. Morrill papers, 1825-1923.
- Morris, George Pope, 1802-1864. George Pope Morris papers, 1832-1862.
- Morrison, James, 1755-1823. James Morrison papers.
- Morrison R. Waite papers, 1818-1933.
- Morrisson, Mary Foulke. Mary Foulke Morrisson scrapbooks.
- Morse, Samuel Finley Breese, 1791-1872. Samuel Finley Breese Morse papers, 1793-1944.
- Mosby, John Singleton, 1833-1916. John Singleton Mosby papers, 1861-1904.
- Mouillard, Louis-Pierre, 1834-1897. Louis-Pierre Mouillard papers, 1833-1987.
- Moulton, Louise Chandler, 1835-1908. Louise Chandler Moulton papers, 1852-1908.
- Munroe, Kirk, 1850-1930. Kirk Munroe papers, 1850-1940.
- Munroe, Mabel Stearns. Mabel Stearns Munroe papers.
- Munroe, Mary Barr. Mary Barr Munroe papers.
- Murray, David, 1830-1905. David Murray papers, 1866-1930.
- Murray, Martha A. Martha A. Murray papers.
- Music cover collection (Library of Congress).
- Myer, Albert James, 1829-1880. Albert James Myer papers, 1816-1880.
- Myer, Albert James, 1829-1880. Albert James Myer papers, 1851-1933.
- Myers, Leonard, 1827-1905. Leonard Myers papers.
- Myrtilla Miner papers, 1825-1960.
N
- Nathan Appleton papers, 1850-1904.
- Nathan Sargent papers, 1866-1957.
- Nathaniel Prentiss Banks papers, 1829-1911.
- Nathaniel Sisson papers, 1838-1932.
- Nathaniel Wright family papers, 1787-1917.
- National American Woman Suffrage Association. National American Woman Suffrage Association records, 1839-1961.
- National American Woman Suffrage Association records, 1839-1961.
- Nazimova, 1879-1945. Nazimova collection, 1877-1988.
- Nazimova collection, 1877-1988.
- Nellie Simmons Meier papers, 1898-1938.
- Nelson W. Aldrich papers, 1777-1930.
- Nepomuceno, Alberto, 1864-1920. Alberto Nepomuceno collection, 1887-1920.
- New England Historic Genealogical Society. New England Historic Genealogical Society records. 1849-1852.
- New York Society for the Suppression of Vice. New York Society for the Suppression of Vice records, 1871-1953.
- New York Society for the Suppression of Vice records, 1871-1953.
- Newland, William Augustine, 1813-1901. Newland/Zeuner collection, circa 1735-circa 1900.
- Newland/Zeuner collection, circa 1735-circa 1900.
- Nicaragua Canal Construction Company. Nicaragua Canal Construction Company records, 1887-1913.
- Nicaragua Canal Construction Company records, 1887-1913.
- Nicaraguan Canal Commission (U.S.) Nicaraguan Canal Commission (U.S.) records.
- Nicholas King family papers, 1792-1987.
- Nicholson, Augustus S., 1830-1911. Augustus S. Nicholson papers, 1861-1934.
- Nicolay, Helen, 1866-1954. Helen Nicolay papers.
- Nicolay, John G. (John George), 1832-1901. John G. Nicolay papers, 1811-1943.
- Nicollet, J. N. (Joseph Nicolas), 1786-1843. J.N. Nicollet papers.
- Niehaus, Earl F. Earl F. Niehaus thesis. 1955.
- Ninian Pinkney papers, 1822-1913.
- Norman Hapgood and Elizabeth Reynolds Hapgood papers, 1824-1977.
O
- O'Callaghan, E. B. (Edmund Bailey), 1797-1880. E.B. O'Callaghan papers, 1830-1879.
- O'Connor, William Douglas, 1832-1889. William Douglas O'Connor papers.
- O'Laughlin, John Callan, 1873-1949. John Callan O'Laughlin papers, 1895-1949.
- O'Neil, Charles, 1842-1927. Charles O'Neil papers, 1833-1927.
- O'Reilly, Alejandro, 1725-1794. Alejandro O'Reilly manuscript volume.
- Octave Chanute papers, 1807-1955.
- Ogden, Robert C. (Robert Curtis), 1836-1913. Robert C. Ogden papers, 1843-1913.
- Oldberg, Arne, 1874-1962. Arne Oldberg collection, circa 1887-1962.
- Oliver Ellsworth family papers, 1762-1907.
- Oliver Wendell Holmes papers, 1837-1931.
- Olmsted Associates. Olmsted Associates records.
- Olmsted Associates. Olmsted Associates records, 1863-1971.
- Olmsted Associates records, 1863-1971.
- Olmsted Brothers. Olmsted Brothers records. (2)
- Olmsted, Frederick Law, 1822-1903. Frederick Law Olmsted papers. (2)
- Olmsted, Frederick Law, 1822-1903. Frederick Law Olmsted papers, 1777-1952.
- Olmsted, Frederick Law, 1870-1957. Frederick Law Olmsted papers.
- Olmsted, Gideon, 1749-1845. Gideon Olmsted papers.
- Olmsted, John, 1791-1873. John Olmsted papers.
- Olmsted, John Charles, 1852-1920. John Charles Olmsted papers.
- Olmsted, Olmsted, and Eliot. Olmsted, Olmsted, and Eliot records. (2)
- Olney, Richard, 1835-1917. Richard Olney papers, 1830-1928.
- O.M. Poe papers, 1852-1922.
- Osborn, Joseph Bloomfield, 1842-1876. Joseph Bloomfield Osborn papers, 1862-1865.
- Oscar S. Straus Memorial Association. Oscar S. Straus Memorial Association records. 1927-1954.
- Oscar S. Straus papers, 1856-1955.
- Osgood family. Field-Osgood family papers, 1702-1938.
- Osgood, Joseph B. F. (Joseph Barlow Felt), b. 1823 Joseph B. F. Osgood papers. 1817-1892.
- Osgood, Maria Bowne Franklin. Maria Bowne Franklin Osgood papers.
- Osgood, Samuel, 1748-1813. Samuel Osgood papers.
- Oviatt, Martin. Martin Oviatt papers, 1863-1995.
- Owen Wister papers, 1829-1966.
P
- Palfrey family. Lee-Palfrey families papers, 1780-1932.
- Palmer, Alexander Smith, 1806-1894. Alexander Smith Palmer papers.
- Palmer family. Palmer-Loper family papers, 1667-1994.
- Palmer-Loper family papers, 1667-1994.
- Palmer, Nathaniel Brown, 1799-1877. Nathaniel Brown Palmer papers.
- Palmer, T. S. (Theodore Sherman), 1868-1955. T. S. Palmer papers, 1877-1954.
- Panama Collection, 1804-1977.
- Park, Maud Wood, 1871-1955. Maud Wood Park papers, 1844-1979.
- Parker, Theodore, 1810-1860. Theodore Parker papers, 1838-1910.
- Parsons, Enoch, 1769-1846. Enoch Parsons papers.
- Parsons family papers, 1769-1878.
- Parsons family. Parsons family papers, 1769-1878.
- Parsons, Samuel Holden, 1737-1789. Samuel Holden Parsons papers.
- Parsons, Samuel Holden, 1800-1871. Samuel Holden Parsons papers.
- Patent medicine labels and advertisements (Library of Congress).
- Patterson, William Franklin, 1826-1886. William Franklin Patterson papers, 1812-1937.
- Paul Federn papers, 1864-1975.
- Paul J. Pelz papers, circa 1800-1921.
- Paul Wilstach collection of Richard Mansfield papers, 1889-1918.
- Peabody, George Foster, 1852-1938. George Foster Peabody papers, 1894-1937.
- Peckham family. Wheeler H. Peckham family papers, 1838-1894.
- Peckham, Rufus W., 1809-1873. Rufus W. Peckham papers.
- Peckham, Rufus Wheeler, 1838-1909. Rufus Wheeler Peckham papers.
- Peckham, Wheeler H. (Wheeler Hazard), 1833-1905. Wheeler H. Peckham family papers, 1838-1894.
- Pelz, Paul J., 1841-1918. Paul J. Pelz papers, circa 1800-1921.
- Périer, Natalie du Motier de La Fayette, 1803-1878. Natalie du Motier de La Fayette Périer papers.
- Perlstein, Israel, 1897-1975. Israel Perlstein collection relating to Imperial Russia, 1613-1914.
- Perry, Matthew Calbraith, 1794-1858. Matthew Calbraith Perry papers.
- Perry, Oliver Hazard, 1785-1819. Oliver Hazard Perry papers.
- Perry S. Heath papers, 1890-1983.
- Peter A. Demens papers, 1880-2000.
- Peter Chardon Brooks Insurance Agency. Peter Chardon Brooks Insurance Agency records.
- Phelps, John S. (John Smith), 1814-1886. John S. Phelps papers.
- Phelps, Mary Whitney. Mary Whitney Phelps papers.
- Philip Henry Sheridan papers, 1853-1896.
- Physick, Edmund, 1725 or 6-1804. Edmund Physick family papers, 1759-1899.
- Physick family. Edmund Physick family papers, 1759-1899.
- Pickett family. Christiancy and Pickett families' papers, 1835-1998.
- Pickett, George E. (George Edward), 1825-1875. George E. Pickett papers.
- Pickett, George E. (George Edward), 1891 or 2-1959. George E. Pickett papers.
- Pickett, John T. (John Thomas), 1822-1884. John T. Pickett papers.
- Pickett, La Salle Corbell, 1848-1931. La Salle Corbell Pickett papers.
- Pickett, Theodore John. Theodore John Pickett papers.
- Pierce-Aiken family papers, 1797-1903.
- Pierce family. Pierce-Aiken family papers, 1797-1903.
- Pierce, Franklin, 1804-1869. Franklin Pierce papers, 1820-1869.
- Pierrepont, Edwards, 1817-1892. Edwards Pierrepont papers, 1847-1900.
- Pierson family. Job Pierson family papers, 1755-1908.
- Pierson, Job, 1791-1860. Job Pierson family papers, 1755-1908.
- Pierson, Job, 1824-1896. Job Pierson papers.
- Pike, Luther H. Luther H. Pike papers.
- Pinchot, Gifford, 1865-1946. Gifford Pinchot papers, 1770-1972.
- Pinchot, James W., 1831-1908. James W. Pinchot papers.
- Pinchot, Mary Eno. Mary Eno Pinchot papers.
- Pinkerton, Allan, 1819-1884. Allan Pinkerton papers.
- Pinkerton, Allan, 1876-1930. Allan Pinkerton papers.
- Pinkerton, Charles, d. 1974. Charles Pinkerton collection of Arthur and Herndon family papers, 1822-1938.
- Pinkerton, Robert A., 1904-1967. Robert A. Pinkerton papers.
- Pinkerton, Robert A. (Robert Allan), 1848-1907. Robert A. Pinkerton papers.
- Pinkerton, William A. (William Allan), 1846-1923. William A. Pinkerton papers.
- Pinkerton's National Detective Agency. Pinkerton's National Detective Agency records, 1853-1999.
- Pinkerton's National Detective Agency records, 1853-1999.
- Pinkney, Ninian, 1811-1877. Ninian Pinkney papers, 1822-1913.
- Plitt, George. George Plitt papers. 1836-1873.
- Plumb, Edward Lee, 1827-1912. Edward Lee Plumb papers, 1825-1903.
- Poe, O. M. (Orlando Metcalfe), 1832-1895. O.M. Poe papers, 1852-1922.
- Porter, David, 1780-1843. David Porter papers.
- Porter, David, 1780-1843. David Porter papers. 1811-1841.
- Porter, David D. (David Dixon), 1813-1891. David D. Porter family papers, 1799-1899.
- Porter, David D. (David Dixon), 1813-1891. David D. Porter papers. 1861-1881.
- Porter family. David D. Porter family papers, 1799-1899.
- Porter family papers, 1811-1881.
- Porter family. Porter family papers, 1811-1881.
- Porter, Fitz-John, 1822-1901. Fitz-John Porter papers, 1830-1949.
- Porter, Horace, 1837-1921. Horace Porter papers, 1853-1922.
- Powel, Mary Edith, 1846-1931. Mary Edith Powel naval historical collection, 1747-1922.
- Powell, E. Alexander (Edward Alexander), 1879- E. Alexander Powell papers, 1893-1957.
- Pratt, Bela Lyon, 1867-1917. Bela Lyon Pratt papers, 1884-1918.
- Presbyterian Church in the U.S.A. Presbytery of Washington City. Presbyterian Church in the U.S.A. Presbytery of Washington City records, 1823-1950.
- Presbyterian Church in the U.S.A. Presbytery of Washington City records, 1823-1950.
- Preston family. Campbell-Preston-Floyd families papers, 1741-1931.
- Price family papers, 1854-1905.
- Price family. Price family papers, 1854-1905.
- Price, John H., fl. 1861-1865. John H. Price papers.
- Price, William George, 1833-1885. William George Price papers.
- Price, William George, 1867-1944. William George Price papers.
- Prince, Christopher, 1751-1832. Christopher Prince papers, 1806-1891.
- Puerto Rican collection, 1591-1900.
- Puerto Rican memorial collection, 1519-1923.
- Puerto Rico. Puerto Rican collection, 1591-1900.
- Pulitzer, Joseph, 1847-1911. Joseph Pulitzer papers, 1880-1924.
- Purdy, Ray Foote, 1889-1965. Ray Foote Purdy papers.
Q
R
- R. Hoe & Company. R. Hoe & Company records, 1831-1948.
- R. Hoe & Company records, 1831-1948.
- Randolph, Elizabeth, fl. 1793. Elizabeth Randolph papers.
- Randolph, Peter S. Peter S. Randolph papers.
- Randolph, William B., b. 1793. William B. Randolph papers, 1696-1884.
- Read family papers, 1568-1906.
- Read family. Read family papers, 1568-1906.
- Read, George, 1733-1798. George Read papers.
- Read, George, 1765-1836. George Read papers.
- Read, James, 1743-1822. James Read papers.
- Read, John, 1769-1854. John Read papers.
- Read, John M. (John Meredith), 1797-1874. John M. Read papers.
- Read, John Meredith, 1837-1896. John Meredith Read papers.
- Reader's collection, Library of Congress Copyright Office drama deposits, 1863-1928.
- Ream, Vinnie, 1847-1914. Vinnie Ream and Richard Leveridge Hoxie papers, 1853-1937.
- Rebekah Crawford and Linda Clarke-Smith papers, 1715-1929.
- Reed, Charles Wellington, 1841-1926. Charles Wellington Reed papers, 1776-1926.
- Reeves, Arthur Middleton, 1856-1891. Arthur Middleton Reeves papers.
- Reeves, Mark E. Mark E. Reeves papers.
- Reid, Elisabeth Mills, 1858-1931. Elisabeth Mills Reid papers.
- Reid family papers, 1795-1970.
- Reid family. Reid family papers, 1795-1970.
- Reid family. Samuel Chester Reid family papers, 1807-1963.
- Reid Foundation. Reid Foundation records. 1944-1958.
- Reid, Helen Rogers, 1882-1970. Helen Rogers Reid papers.
- Reid, Ogden Mills, 1882-1947. Ogden Mills Reid papers.
- Reid, Samuel C. (Samuel Chester), 1818-1897. Samuel C. Reid papers.
- Reid, Samuel Chester, 1783-1861. Samuel Chester Reid family papers, 1807-1963.
- Reid, Whitelaw, 1837-1912. Whitelaw Reid papers.
- Remey, Charles Mason, 1874-1974. Charles Mason Remey family papers, 1778-1949.
- Remey family. Charles Mason Remey family papers, 1778-1949.
- Remey, George Collier, 1841-1928. George Collier Remey papers.
- Remey, Mary Josephine Mason, 1845-1938. MaryJosephine Mason Remey papers.
- Reuben Cleary book manuscripts, 1886.
- Reverdy Johnson papers, 1830-1876.
- Reynolds, Joseph Jones, 1822-1899. Joseph Jones Reynolds papers.
- Reynolds, Juliana Smith. Juliana Smith Reynolds papers.
- Reynolds, Tilton C., 1843-1913. Tilton C. Reynolds papers, 1851-1963.
- Richard Henry Wilde papers, 1807-1867.
- Richard H.M. Settle correspondence and photograph, 1871-1879.
- Richard Olney papers, 1830-1928.
- Richard Rush papers, 1805-1852.
- Richardson, Holden Chester, 1878- Holden Chester Richardson papers, 1844-1946.
- Richardson, William Merchant, 1774-1838. William Merchant Richardson papers.
- Richmond Pearson Hobson papers, 1889-1966.
- Rigby family. Tunnicliff, Rigby, and Staton families papers, 1854-1990.
- Riggs, Elisha, 1779-1853. Elisha Riggs papers. 1813-1896.
- Riggs, Elisha, 1826-1881. Elisha Riggs papers. 1844-1890.
- Riggs, Elisha Francis, 1851-1910. Elisha Francis Riggs papers. 1860-1910.
- Riggs, Elisha Francis, 1887-1936. Elisha Francis Riggs papers. 1887-1935.
- Riggs family papers, 1763-1945.
- Riggs family. Riggs family papers, 1763-1945.
- Riggs, George Washington, 1813-1881. George Washington Riggs papers. 1836-1881.
- Riggs, Romulus, 1782-1846. Romulus Riggs papers. 1821-1882.
- Riggs, T. Lawrason (Thomas Lawrason), 1888-1943. T. Lawrason Riggs papers. 1790-1943.
- Riggs, Thomas, 1873-1945. Thomas Riggs papers. 1887-1945.
- Riggs, William Henry, 1837-1924. William Henry Riggs papers. 1850-1912.
- Rihani, Ameen Fares, 1876-1940. Ameen Fares Rihani papers, 1897-1940.
- Riis, Jacob A. (Jacob August), 1849-1914. Jacob A. Riis papers, 1870-1990.
- Riley, James Whitcomb, 1849-1916. James Whitcomb Riley papers, 1883-1915.
- Robards, Lewis C. Lewis C. Robards receipt book. 1851-1853.
- Robert Anderson papers, 1819-1948.
- Robert C. Ogden papers, 1843-1913.
- Robert Green Ingersoll papers, 1826-1940.
- Robert H. Terrell papers, 1870-1954.
- Robert, Henry M. (Henry Martyn), 1837-1923. Henry M. Robert papers, 1853-1937.
- Robert Lee Bullard papers, 1881-1955.
- Robert Patterson Hughes papers, 1876-1994.
- Robert Wilson Shufeldt papers, 1836-1910.
- Roberts, Anna A. Rice, d. 1881. Anna A. Rice Roberts papers.
- Roberts, Benjamin Titus, 1823-1893. Benjamin Titus Roberts family papers, 1832-1954.
- Roberts, Benson Howard. Benson Howard Roberts papers.
- Roberts, Ellen Lois Stowe. Ellen Lois Stowe Roberts papers.
- Roberts, Emma Sellew. Emma Sellew Roberts papers.
- Roberts family. Benjamin Titus Roberts family papers, 1832-1954.
- Roberts family. Joseph J. Roberts family papers, 1839-2001.
- Roberts, George Lane. George Lane Roberts papers.
- Roberts, Joseph J. (Joseph Jenkins), 1809-1876. Joseph J. Roberts family papers, 1839-2001.
- Robles, Sebastian T. (Sebastian Tomas), 1902-1959. Sebastian T. Robles papers.
- Rockwell, Almon Ferdinand, b. 1835. Almon Ferdinand Rockwell papers, 1852-1900.
- Rodgers family papers, 1740-1987.
- Rodgers family papers, 1788-1944.
- Rodgers family. Rodgers family papers, 1740-1987.
- Rodgers family. Rodgers family papers, 1788-1944.
- Rodgers, John, 1773-1838. John Rodgers papers. (2)
- Rodgers, John, 1812-1882. John Rodgers papers.
- Rodgers, John, 1881-1926. John Rodgers papers.
- Rodgers, John Augustus, 1848-1933. John Augustus Rodgers papers.
- Rodgers, Minerva Denison, 1784-1877. Minerva Denison Rodgers papers.
- Rodgers, William Ledyard, 1860-1944. William Ledyard Rodgers papers.
- Rodolfo R. Schuller papers, 1492-1915.
- Roe, Francis Asbury, 1823-1901. Francis Asbury Roe papers, 1842-1901.
- Roger Welles papers, 1884-1926.
- Rogers, Charles H. Charles H. Rogers family papers, 1858-1930.
- Rogers family. Charles H. Rogers family papers, 1858-1930.
- Rogers, William Barton, 1804-1882. William Barton Rogers notebooks. 1835-1841.
- Roosevelt, Theodore, 1858-1919. Theodore Roosevelt papers, 1759-1993.
- Root, Elihu, 1845-1937. Elihu Root papers, 1863-1937.
- Roper, Laura Wood, 1911- Laura Wood Roper papers, 1822-1982.
- Rosa Freud Graf papers, 1879-1942.
- Roswell Randall Hoes papers, 1799-1912.
- Rowan, Stephen C. (Stephen Clegg), 1808-1890. Stephen C. Rowan papers, 1826-1890.
- Royal Rodney Ingersoll and Royal E. Ingersoll papers, 1866-1935.
- R.R. Bowker papers, 1831-1931.
- Rudolph Forster papers, 1898-1943.
- Ruffin, Edmund, 1794-1865. Edmund Ruffin diaries, 1856-1865.
- Rufus S. Frost papers, 1841-1883.
- Rush, Madison, fl. 1845-1847. Madison Rush journal. 1845-1847.
- Rush, Richard, 1780-1859. Richard Rush papers, 1805-1852.
- Russia miscellany, 1759-1928.
- Russian Orthodox Greek Catholic Church of America. Diocese of Alaska records, 1733-1938.
- Russian Orthodox Greek Catholic Church of America. Diocese of Alaska. Russian Orthodox Greek Catholic Church of America. Diocese of Alaska records, 1733-1938.
S
- Sacarisen, Carl John, 1875-1968. Carl John Sacarisen diary, 1898-1899.
- Salmon P. Chase papers, 1755-1898.
- Samuel Chester Reid family papers, 1807-1963.
- Samuel Edward Axson sermons, 1857-1880.
- Samuel Finley Breese Morse papers, 1793-1944.
- Samuel Franklin Emmons papers, 1725-1914.
- Samuel Freeman Miller correspondence and diaries, 1854-1887.
- Samuel Hay Kauffmann papers, 1871-1896.
- Samuel Hooper papers, 1829-1874.
- Samuel J. Baird papers, 1834-1892.
- Samuel P. Warren collection, 1840-1950.
- Samuel Peter Heintzelman papers, 1822-1913.
- Samuel Phillips Lee papers, 1860-1869.
- Samuel Smith family papers, 1772-1911.
- Samuel W. Dike papers, 1870-1913.
- Samuel Wylie Crawford papers, 1860-1892.
- Sanders, Anna Johnson Reid, circa 1815-1890. Anna Johnson Reid Sanders correspondence and journals.
- Sanders family. George Nicholas Sanders family papers, 1833-1973.
- Sanders, George N. (George Nicholas), 1848-1890. George N. Sanders journal.
- Sanders, George Nicholas, 1812-1873. George Nicholas Sanders family papers, 1833-1973.
- Sarah Stone autograph collection, 1720-1962.
- Sargent, Nathan, 1849-1907. Nathan Sargent papers, 1866-1957.
- Sayles Jenks Bowen papers, 1836-1882.
- Schaeffer, F. C. (Frederick Christian), 1792-1831. F. C. Schaeffer papers.
- Schnabel, Artur, 1882-1951. Artur Schnabel collection, 1899-1950.
- Schoolcraft, Henry Rowe, 1793-1864. Henry Rowe Schoolcraft papers, 1788-1941.
- Schoolcraft, Henry Rowe, Mrs. Mrs. Henry Rowe Schoolcraft papers.
- Schoolcraft, Jane Johnston, 1800-1842. Jane Johnston Schoolcraft papers.
- Schoolcraft, Lawrence, 1757-1840. Lawrence Schoolcraft papers.
- Schoonmaker, Cornelius Marius, 1839-1889. Cornelius Marius Schoonmaker papers, 1833-1931.
- Schuller, Rodolfo R., 1873-1932. Rodolfo R. Schuller papers, 1492-1915.
- Schurz, Carl, 1829-1906. Carl Schurz papers, 1842-1983.
- Schuyler Colfax correspondence and speeches, 1837-1882.
- Scott, Hugh Lenox, 1853-1934. Hugh Lenox Scott papers, 1582-1981.
- Scott, William McKendree, 1817-1861. William McKendree Scott papers. 1845.
- Scruggs, William Lindsay, 1836-1912. William Lindsay Scruggs papers, 1828-1955.
- See, T. J. J. (Thomas Jefferson Jackson), b. 1866. T.J.J. See papers, 1887-1960.
- Selfridge, T. O. (Thomas Oliver), 1836-1924. T.O. Selfridge papers, 1852-1926.
- Selfridge, Thomas Oliver, 1804-1902. Thomas Oliver Selfridge papers, 1809-1927.
- Serge Diaghilev/Serge Lifar collection, 1750-1950.
- Settle, Richard H. M. Richard H.M. Settle correspondence and photograph, 1871-1879.
- Shaker collection of records concerning the United Society of Believers in Christ's Second Appearing, 1676-1937.
- Shaw family papers, 1636-1892.
- Shaw family. Shaw family papers, 1636-1892.
- Sheldon, Mary French, 1847-1936. Mary French Sheldon papers, 1885-1938.
- Shepherd, Alexander Robey, 1835-1902. Alexander Robey Shepherd papers, 1776-1945.
- Shepherd, William R. (William Robert), 1871-1934. William R. Shepherd papers, 1554-1931.
- Sheppard, Eli T. Eli T. Sheppard papers, 1872-1924.
- Sheridan, Philip Henry, 1831-1888. Philip Henry Sheridan papers, 1853-1896.
- Sherman, Ellen Ewing, 1824-1888. Ellen Ewing Sherman papers.
- Sherman, James H. (James Henry). James H. Sherman correspondence, 1873-1876.
- Sherman, John, 1823-1900. John Sherman papers, 1836-1900.
- Sherman, William T. (William Tecumseh), 1820-1891. William T. Sherman papers.
- Sherman, William T. (William Tecumseh), 1820-1891. William T. Sherman papers, 1759-1897.
- Shippen, Alice Lee, 1736-1817. Alice Lee Shippen papers.
- Shippen, Edward, 1826-1911. Edward Shippen papers.
- Shippen family papers, 1671-1936.
- Shippen family. Shippen family papers, 1671-1936.
- Shippen, Thomas Lee, 1765-1798. Thomas Lee Shippen papers. (2)
- Shippen, William, 1712-1801. William Shippen papers.
- Shippen, William, 1736?-1808. William Shippen papers.
- Short, Charles Wilkins, 1794-1863. Charles Wilkins Short papers.
- Short family. Short-Harrison-Symmes families papers, 1760-1878.
- Short-Harrison-Symmes families papers, 1760-1878.
- Short, John Cleves, 1792-1864. John Cleves Short papers.
- Short, Peyton, 1761-1825. Peyton Short papers.
- Short, William, 1759-1849. William Short papers.
- Short, William, 1759-1849. William Short papers, 1778-1853.
- Shufeldt, Robert Wilson, 1822-1895. Robert Wilson Shufeldt papers, 1836-1910.
- Sicard, Montgomery, 1836-1900. Montgomery Sicard papers, 1800-1948.
- Sickles, Daniel Edgar, 1819-1914. Daniel Edgar Sickles papers, 1821-1918.
- Sidell, William Henry, 1810-1873. William Henry Sidell papers. 1849.
- Sigmund Freud papers, circa 6th century B.C.-1998.
- Silas Casey papers, 1771-1941.
- Simmons, James Fowler, 1795-1864. James Fowler Simmons papers, 1771-1939.
- Simon Cameron papers, 1738-1919.
- Simpson, Matthew, 1811-1884. Matthew Simpson papers, 1829-1927.
- Singleton family papers, 1758-1860.
- Singleton family. Singleton family papers, 1758-1860.
- Sirch, Charles W. Charles W. Sirch papers, 1878-1935.
- Sisson, Nathaniel, 1845-1932. Nathaniel Sisson papers, 1838-1932.
- Skipwith, Fulwar, 1765-1839. Fulwar Skipwith papers.
- Smith, C. Alphonso (Charles Alphonso), 1864-1924. C. Alphonso Smith papers. 1864-1927.
- Smith, Ebenezer, fl. 1797-1840. Ebenezer Smith account books. 1797-1840.
- Smith Ely Jelliffe papers, 1882-1977.
- Smith family. Samuel Smith family papers, 1772-1911.
- Smith, Herbert A. (Herbert Augustine), 1866-1944. Herbert A. Smith papers.
- Smith, John Spear, d. 1866. John Spear Smith papers. 1804-1867.
- Smith, Logan Pearsall, 1865-1946. Logan Pearsall Smith papers, 1760-1946.
- Smith, Robert, 1757-1842. Robert Smith papers. 1796-1830.
- Smith, Samuel, 1752-1839. Samuel Smith family papers, 1772-1911.
- Solomon, Hannah G. (Hannah Greenebaum), 1858-1942. Hannah G. Solomon papers, 1817-1986.
- Southworth, Emma Dorothy Eliza Nevitte, 1819-1899. Emma Dorothy Eliza Nevitte Southworth papers, 1870-1918.
- Spencer, Lyman Potter, 1840-1915. Lyman Potter Spencer papers, 1856-1914.
- Spinner, Francis Elias, 1802-1890. Herman K. Crofoot collection of Francis Elias Spinner papers, 1792-1908.
- Spinner, John Peter, 1768-1848. John Peter Spinner diary. circa 1839.
- Squier, E. G. (Ephraim George), 1821-1888. E.G. Squier papers, 1841-1888.
- Stanley-Brown, Joseph, 1858-1941. Joseph Stanley-Brown papers, 1730-1941.
- Stanley-Brown, Mary Garfield, 1867-1947. Mary Garfield Stanley-Brown papers.
- Stanton, Edwin McMasters, 1814-1869. Edwin McMasters Stanton papers, 1818-1921.
- Stanton, Elizabeth Cady, 1815-1902. Elizabeth Cady Stanton papers, 1814-1946.
- Staton family. Tunnicliff, Rigby, and Staton families papers, 1854-1990.
- Stedman, Edmund Clarence, 1833-1908. Edmund Clarence Stedman papers, 1871-1923.
- Stephen Bleecker Luce papers, 1799-1955.
- Stephen C. Rowan papers, 1826-1890.
- Stephens, Alexander Hamilton, 1812-1883. Alexander Hamilton Stephens papers, 1784-1886.
- Stephenson, John Aldrich. John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers. 1745-1966.
- Stephenson, Nathaniel W. (Nathaniel Wright), 1867-1935. Nathaniel W. Stephenson papers.
- Stevens, Samuel, 1778-1860. Samuel Stevens papers.
- Stevens, Thaddeus, 1792-1868. Thaddeus Stevens papers, 1811-1927.
- Stevenson, Andrew, 1784-1857. Andrew Stevenson and J.W. Stevenson papers. 1756-1882.
- Stevenson, J. W. (John White), 1812-1886. Andrew Stevenson and J.W. Stevenson papers. 1756-1882.
- Stewart, David, 1800-1858. David Stewart papers.
- Stewart, Emily A. Emily A. Stewart collection of Elihu Root material, 1885-1959.
- Stewart, John, d. 1820. John Stewart papers.
- Stokes, E. H. (Ellwood Haines), 1815-1897. E.H. Stokes papers. 1846-1865.
- Stone, Lucy, 1818-1893. Lucy Stone papers.
- Stone, Sarah, fl. 1840. Sarah Stone autograph collection, 1720-1962.
- Storey, Moorfield, 1845-1929. Moorfield Storey papers, 1876-1929.
- Straus, Oscar S. (Oscar Solomon), 1850-1926. Oscar S. Straus papers, 1856-1955.
- Strauss, Joseph, 1861-1948. Joseph Strauss papers, 1884-1949.
- Stuart, George H. (George Hay), 1816-1890. George H. Stuart papers, 1792-1946.
- Sumner, Charles, 1811-1874. Charles Sumner correspondence, 1841-1874.
- Sumner, Edwin V. (Edwin Vose), 1797-1863. Edwin V. Sumner papers.
- Sumner, Edwin Vose, 1835-1912. Edwin Vose Sumner papers.
- Sumner family papers, 1836-1940.
- Sumner family. Sumner family papers, 1836-1940.
- Sumner, Samuel S. (Samuel Storrow), 1842-1937. Samuel Storrow Sumner papers.
- Susan B. Anthony Foundation (Washington, D.C.) records, 1895-1943.
- Susan B. Anthony Foundation (Washington, D.C.). Susan B. Anthony Foundation (Washington, D.C.) records, 1895-1943.
- Susan B. Anthony papers, 1846-1934.
- Swan, Robert, fl. ca. 1828. Robert Swan sale catalog of books. circa 1828.
- Swisher, Carl Brent, 1897-1968. Carl Brent Swisher collection of research materials relating to Roger B. Taney, 1836-1962.
- Sylvanus Cadwallader papers, 1818-1904.
- Symington, Evelyn Wadsworth, 1903-1972. Evelyn Wadsworth Symington collection of John Hay material, 1864-1905.
- Symmes family. Short-Harrison-Symmes families papers, 1760-1878.
- Symmes, John Cleves, 1742-1814. John Cleves Symmes papers.
T
- T. S. Palmer papers, 1877-1954.
- Taft, Alphonso, 1810-1891. Alphonso Taft papers.
- Taft, Helen Herron, 1861-1943. Helen Herron Taft papers.
- Taft, Louise Maria Torrey, 1827-1907. Louise Maria Torrey Taft papers.
- Taft, William H. (William Howard), 1857-1930. William H. Taft papers, 1784-1973.
- Taggart, Hugh T. (Hugh Thomas), 1844-1914. Hugh T. Taggart collection relating to the District of Columbia and Maryland, 1751-1889.
- Tams-Witmark collection, 1701-1915.
- Tams-Witmark-Princeton collection.
- Tappan, Benjamin, 1773-1857. Benjamin Tappan papers, 1795-1900.
- Tappan, Lewis, 1788-1873. Lewis Tappan papers, 1809-1903.
- Tappan, William, b. 1863. William Tappan autograph collection, 1640-1939.
- Taylor, Anna Harrison, 1814-1865. Anna Harrison Taylor papers.
- Taylor, H. C. (Henry Clay), 1845-1904. H.C. Taylor papers, 1862-1904.
- Taylor, Montgomery Meigs, 1869-1952. Montgomery Meigs Taylor papers, 1890-1935.
- Taylor, Zachary, 1784-1850. Zachary Taylor papers, 1814-1931.
- Tee-Van, Helen Damrosch, 1893-1976. Damrosch - Tee Van Collection. 1856-1969.
- Terrell, Mary Church, 1863-1954. Mary Church Terrell papers, 1851-1962.
- Terrell, Robert H. (Robert Heberton), 1857-1925. Robert H. Terrell papers, 1870-1954.
- T.H. Gallaudet and Edward Miner Gallaudet papers, 1806-1958.
- Thaddeus Stevens papers, 1811-1927.
- Thayer, William Sydney, 1830-1864. William Sydney Thayer papers, 1835-1901.
- Theo. A. Bingham papers, 1897-1903.
- Theodore Marburg papers, 1859-1940.
- Theodore Parker papers, 1838-1910.
- Theodore Roosevelt papers, 1759-1993.
- Thomas A. Edison, Inc. Edison sheet music collection, 1830-1958.
- Thomas Bailey Aldrich papers, 1873-1901.
- Thomas Biggs Harned collection of Walt Whitman papers, 1842-1937.
- Thomas Capek collection of materials relating to Czechoslovakia and Czech Americans, 1619-1953.
- Thomas Corwin correspondence, 1850-1853.
- Thomas Ewing family papers, 1757-1941.
- Thomas F. Bayard papers, 1780-1899.
- Thomas Henry Carter papers, 1883-1917.
- Thomas Oliver Selfridge papers, 1809-1927.
- Thomas Sidney Jesup papers, 1780-1907.
- Thompson, Ambrose W. Ambrose W. Thompson papers, 1847-1960.
- Thornton, Anna Maria Brodeau, 1775?-1865. Anna Maria Brodeau Thornton papers.
- Thornton, Anna Maria Brodeau, 1775?-1865. Anna Maria Brodeau Thornton papers, 1793-1861.
- Thornton, William, 1759-1828. William Thornton papers, 1741-1865.
- Ticknor, Benjamin Holt, 1842-1914. Benjamin Holt Ticknor papers, 1595-1935.
- Ticknor, Caroline, 1866-1937. Caroline Ticknor papers.
- Tilton C. Reynolds papers, 1851-1963.
- Tilton family papers, 1836-1876.
- Tilton family. Tilton family papers, 1836-1876.
- Tissandier, Albert, 1839-1906. Tissandier collection on the history of aeronautics. 1539-1929.
- Tissandier collection on the history of aeronautics, 1539-1929.
- Tissandier, Gaston, 1843-1899. Tissandier collection on the history of aeronautics, 1539-1929.
- Tissandier, Paul, b. 1881. Tissandier collection on the history of aeronautics. 1539-1929.
- Titus Coan family papers, 1818-1923.
- T.J.J. See papers, 1887-1960.
- T.O. Selfridge papers, 1852-1926.
- Tobacco label collection (Library of Congress).
- Tompkins, Daniel Augustus, 1851-1914. Daniel Augustus Tompkins papers, 1887-1920.
- Toner, Joseph M. (Joseph Meredith), 1825-1896. Joseph Meredith Toner collection of manuscripts, 1741-1896.
- Torrey, Delia C. Delia C. Torrey papers.
- Train, Charles Jackson, 1845-1906. Charles Jackson Train journals, 1863-1870.
- Train, Charles Russell, 1879-1967. Charles Russell Train papers, 1898-1967.
- Traubel, Anne Montgomerie, 1864-1954. Anne Montgomerie Traubel papers.
- Traubel, Anne Montgomerie, 1864-1954. Horace Traubel and Anne Montgomerie Traubel papers. 1824-1979.
- Traubel, Gertrude. Gertrude Traubel papers. 1880-1979.
- Traubel, Horace, 1858-1919. Horace Traubel and Anne Montgomerie Traubel papers, 1824-1979.
- Traubel, Horace, 1858-1919. Horace Traubel papers.
- Trumbull, Lyman, 1813-1896. Lyman Trumbull correspondence, 1843-1894.
- Truxtun, Thomas, 1755-1822. Thomas Truxton papers.
- Tuck, Amos, 1810-1879. Amos Tuck papers.
- Tucker, George Edwin. George Edwin Tucker papers.
- Tucker, Mary Logan, b. 1860 or 61. Mary Logan Tucker papers.
- Tunnicliff family. Tunnicliff, Rigby, and Staton families papers, 1854-1990.
- Tunnicliff, Rigby, and Staton families papers, 1854-1990.
- Turner, Ann Arnold Key, 1811-1884. Ann Arnold Key Turner papers.
- Turner, Daniel, 1796-1860. Daniel Turner papers.
- Turner family. Key-Cutts-Turner family papers, 1808-1975.
- Turner, Justin G. Justin G. Turner autograph collection, 1763-1968.
- Twitchell, Kenaston. Kenaston Twitchell papers.
- Tyler Dennett collection relating to John Hay, 1861-1937.
- Tyler, John, 1790-1862. John Tyler papers, 1691-1918.
- Tyler, Julia Gardiner, 1820-1889. Julia Gardiner Tyler papers.
- Tyler, Lyon Gardiner, 1853-1935. Lyon Gardiner Tyler papers.
U
- Ulysses S. Grant papers, 1819-1974.
- Underwood, Norman, b. 1878. Norman Underwood papers.
- Underwood, Wilbur, 1876-1935. Wilbur Underwood papers, 1895-1969.
- United States. Coast Guard. Historian's Office. U.S. Coast Guard. Historian's Office collection, 1746-1951.
- United States. Congress. House. Office of the Clerk. United States. Congress. House. Office of the Clerk records. 1856-1888.
- United States Constitution collection, 1773-1944.
- United States finance collection, 1761-1908.
- United States Naval Observatory records, 1830-1900.
- United States Naval Observatory. United States Naval Observatory records, 1830-1900.
- U.S. Coast Guard. Historian's Office collection, 1746-1951.
V
- Van Buren, Angelica Singleton, 1816-1877. Angelica Singleton Van Buren papers.
- Van Devanter, Willis, 1859-1941. Willis Van Devanter papers, 1884-1941.
- Van Voorhis, Daniel. Daniel Van Voorhis correspondence and reports. 1911-1913.
- Van Voorhis, Edith Burbank. Edith Burbank Van Voorhis correspondence. 1911-1913.
- Van Voorhis family. Burbank-Van Voorhis families papers, 1814-1913.
- VanderPoel, Halsted B. Halsted B. VanderPoel literary collection, 1815-1929.
- Vernon Boyce Hampton papers, 1872-1971.
- Vetter, Helen Cook. Helen Cook Vetter papers. 1910-1977.
- Victor Herbert collection, 1880-1939.
- Victor S. Clark papers, 1827-1944.
- Vinnie Ream and Richard Leveridge Hoxie papers, 1853-1937.
- Visual materials from the Blackwell family papers. (2)
- Visual materials from the Booker T. Washington papers.
- Visual materials from the O.M. Poe papers.
- Vitte, S. I︠U︡. (Sergeĭ I︠U︡lʹevich), graf, 1849-1915. Graf Sergeĭ I︠U︡lʹevich Vitte letter. 1893.
- Von Recum family. Howard-von Recum family papers, 1869-1972.
- Von Recum, Marie Ernestine Howard, Baroness, 1868-1954. Marie Ernestine Howard von Recum correspondence and diaries.
W
- W. Averell Harriman papers, 1869-1988.
- W J McGee papers, 1880-1916.
- W. Somerset Maugham papers, 1897-1966.
- Wade, B. F. (Benjamin Franklin), 1800-1878. B.F. Wade papers, 1832-1886.
- Wade Hampton family papers, 1855-1935.
- Wade, Joseph Sanford, b. 1880. Joseph Sanford Wade papers, 1898-1955.
- Wade, Nicholas King, 1823-1899. Nicholas King Wade papers. 1856.
- Wade, William, 1789-1875. William Wade papers. 1840-1861.
- Wadsworth family. James Wadsworth family papers, 1730-1959.
- Wadsworth, James, 1768-1844. James Wadsworth family papers, 1730-1959.
- Wadsworth, James S. (James Samuel), 1807-1864. James S. Wadsworth papers.
- Wadsworth, James Wolcott, 1846-1926. James Wolcott Wadsworth collection.
- Wadsworth, James Wolcott, 1846-1926. James Wolcott Wadsworth papers.
- Wadsworth, James Wolcott, 1877-1952. James Wolcott Wadsworth papers.
- Wadsworth, William, 1761-1833. William Wadsworth papers.
- Waite, Morrison R. (Morrison Remick), 1816-1888. Morrison R. Waite papers, 1818-1933.
- Walker, Henry, d. 1864. Henry Walker correspondence, 1861-1864.
- Walker, John Grimes, 1835-1907. John Grimes Walker papers, 1873-1903.
- Walker, William Holmes, 1820-1908. William Holmes Walker papers, 1855-1982.
- Walt Whitman papers, 1837-1957.
- Walt Whitman papers in the Charles E. Feinberg collection, 1763-1985.
- Walter Francis Willcox papers, 1851-1965.
- Walter Quintin Gresham papers, 1857-1932.
- Ward family papers, 1831-1904.
- Ward family. Ward family papers, 1831-1904.
- Ward, James Thomas, 1820-1897. James Thomas Ward papers, 1838-1897.
- Ward, Lester Frank, 1841-1913. Lester Frank Ward papers, 1883-1906.
- Ward, William Norvell, 1817-1881. William Norvell Ward papers.
- Warden, David Bailie, 1772-1845. David Bailie Warden papers.
- Warren, Fiske, 1862-1938. Warren Fiske diary excerpts.
- Warren, Samuel P. (Samuel Prowse), 1841-1915. Samuel P. Warren collection, 1840-1950.
- Washburne, E. B. (Elihu Benjamin), 1816-1887. E. B. Washburne papers, 1829-1889.
- Washington, Booker T., 1856-1915. Booker T. Washington papers.
- Washington, Booker T., 1856-1915. Visual materials from the Booker T. Washington papers.
- Washington family collection, 1582-1965.
- Washington family. Washington family collection, 1582-1965.
- Washington, George, 1732-1799. George Washington papers. 1688-1896.
- Waters, Asa H. (Asa Holman), 1808-1887. Asa H. Waters papers.
- Waters, Elizabeth. Elizabeth Waters papers.
- W.B. Bryan notes and newspaper extracts, 1789-1888.
- Weaver, Aaron Ward, 1832-1919. Aaron Ward Weaver letterpress books, 1861-1884.
- Webster, Daniel, 1782-1852. Daniel Webster papers, 1800-1900.
- Weik, Jesse William, 1857-1930. Jesse William Weik papers. 1830-1927.
- Welles, Edgar Thaddeus, 1843-1914. Diary of Gideon Welles, secretary of the navy under Lincoln and Johnson. 1911.
- Welles, Gideon, 1802-1878. Gideon Welles papers, 1777-1911.
- Welles, Gideon, 1802-1878. Lincoln and Seward; remarks upon the memorial address of Chas. Francis Adams, on the late Wm. H. Seward, with incidents and comments illustrative of the measures and policy of the administration of Abraham Lincoln, and views as to the relative positions of the late President and Secretary of State. 1874.
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- Wharton Barker papers, 1864-1921.
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- Whitall, Ann Cooper, 1716-1797. Ann Cooper Whitall papers.
- White, Henry, 1850-1927. Henry White papers, 1812-1931.
- White, Margaret Stuyvesant Rutherford, 1857-1916 Margaret Stuyvesant Rutherford White papers.
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- Whiting family. William Henry Whiting family papers, 1731-1952.
- Whiting, William Henry, 1843-1925. William Henry Whiting family papers, 1731-1952.
- Whitlock, Brand, 1869-1934. Brand Whitlock papers, circa 1890-1934.
- Whitman, Walt, 1819-1892. Thomas Biggs Harned collection of Walt Whitman papers. 1842-1937.
- Whitman, Walt, 1819-1892. Walt Whitman notes. 1850.
- Whitman, Walt, 1819-1892. Walt Whitman papers.
- Whitman, Walt, 1819-1892. Walt Whitman papers, 1837-1957.
- Whitman, Walt, 1819-1892. Walt Whitman papers in the Charles E. Feinberg collection. 1806-1981.
- Whitney, Anna L. (Anna Lavinia), 1834-1883. Anna L. Whitney diary and religious journal. 1872-1875.
- Whitney, Clara A. Clara A. Whitney papers, 1872-1975.
- Whitney, Harry Payne, 1872-1930. Harry Payne Whitney collection of letters of William Collins Whitney. 1757-1942.
- Whitney, William C. (William Collins), 1841-1904. Harry Payne Whitney collection of letters of William Collins Whitney, 1757-1942.
- Whitney, William C. (William Collins), 1841-1904. Visual materials from the Harry Payne Whitney collection of letters of William Collins Whitney.
- Whitten, Benjamin F. (Benjamin Franklin), b. ca. 1836. Benjamin F. Whitten papers, 1848-1945.
- Whittle, D. W. (Daniel Webster), 1840-1901. D.W. Whittle diary. 1864.
- Whittle, D. W. (Daniel Webster), 1840-1901. D.W. Whittle papers, 1861-1974.
- Wiksell, Gustave Percival. Gustave Percival Wiksell papers, 1855-1939.
- Wilbur J. Carr papers, 1892-1942.
- Wilbur Underwood papers, 1895-1969.
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- Wilde, Richard Henry, 1789-1847. Richard Henry Wilde papers, 1807-1867.
- Wilder, Marshall P. (Marshall Pinckney), 1859-1915. Marshall P. Wilder papers, 1880-1914.
- Wile, Frederic William, 1873-1941. Frederic William Wile scrapbooks, 1898-1941.
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- Wilhelm Fliess papers, 1894-1929.
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- Wilkins, William D. (William Duncan), 1826-1882. William D. Wilkins papers, 1847-1863.
- Willard, Antonia Ford, 1838-1871. Antonia Ford Willard papers.
- Willard, Belle Layton Wyatt, 1873-1954. Belle Layton Wyatt Willard papers.
- Willard family papers, 1800-1968.
- Willard family. Willard family papers, 1800-1968.
- Willard H. Brownson papers, 1859-1932.
- Willard, Joseph Clapp, 1820-1897. Joseph Clapp Willard papers.
- Willard, Joseph Edward, 1865-1924. Joseph Edward Willard papers.
- Willcox, Walter Francis, 1861-1964. Walter Francis Willcox papers, 1851-1965.
- William A.H. Allen papers, 1863-1884.
- William Allen papers, 1796-1879.
- William Allen White papers, 1859-1944.
- William B. Bradbury collection, 1846-1928.
- William B. Randolph papers, 1696-1884.
- William Banks Caperton papers, 1873-1939.
- William D. Wilkins papers, 1847-1863.
- William Dudley Foulke papers, circa 1470-1952.
- William E. Chandler papers, 1863-1917.
- William Edmund Curtis papers, 1885-1923.
- William Franklin Patterson papers, 1812-1937.
- William Goodell papers, 1818-1917.
- William H. Emory papers, 1877-1948.
- William H. Taft papers, 1784-1973.
- William Henry Allison diaries, 1868-1940.
- William Henry Whiting family papers, 1731-1952.
- William Holmes Walker papers, 1855-1982.
- William Jennings Bryan papers, 1877-1940.
- William LePre Houston family papers, 1777-1936.
- William Lindsay Scruggs papers, 1828-1955.
- William Maxwell Evarts papers, 1667-1918.
- William McKinley papers, circa 1847-1935.
- William Medill papers, 1834-1864.
- William Pitt Fessenden papers, 1832-1878.
- William R. Day papers, 1820-1923.
- William R. Shepherd papers, 1554-1931.
- William Short papers, 1778-1853.
- William Smith Culbertson papers, 1897-1965.
- William Sydney Thayer papers, 1835-1901.
- William T. Sherman papers, 1759-1897.
- William Tappan autograph collection, 1640-1939.
- William Thornton papers, 1741-1865.
- William W. Coblentz papers, 1883-1960.
- Williams College. Institute of Politics. Williams College. Institute of Politics records. 1926-1932.
- Williams family. John Warren Williams family papers, 1839-1895.
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- Williams, Martha Ann Tilton, 1827-1919. Martha Ann Tilton Williams travel journal. 1894-1895.
- Willis, Edward, 1834-1910. Edward Willis papers, 1854-1906.
- Willis Van Devanter papers, 1884-1941.
- Willoughby, Hugh L. (Hugh Laussat), b. 1856. Hugh L. Willoughby scrapbooks. 1903-1912.
- Wilson, Edith Bolling Galt, 1872-1961. Edith Bolling Galt Wilson papers.
- Wilson, James Harrison, 1837-1925. James Harrison Wilson papers, circa 1862-1923.
- Wilson, Woodrow, 1856-1924. Woodrow Wilson papers, 1786-1957.
- Wilstach, Paul, 1870-1952. Paul Wilstach collection of Richard Mansfield papers, 1889-1918.
- Winslow, Francis, 1818-1862. Francis Winslow papers, 1833-1863.
- Wister, Owen, 1860-1938. Owen Wister papers, 1829-1966.
- Witbeck, C. William. C. William Witbeck legal collection, 1823-1933.
- Wm. Oland Bourne papers, 1841-1885.
- Wood, James R. (James Rodney). James R. Wood Civil War memoirs.
- Wood, Leonard, 1860-1927. Leonard Wood diary. 1886.
- Woodbury, Charles Levi, 1820-1898. Charles Levi Woodbury papers.
- Woodbury, Elizabeth Williams Clapp. Elizabeth Williams Clapp Woodbury papers.
- Woodbury family. Levi Woodbury family papers, 1638-1914.
- Woodbury, Levi, 1789-1851. Levi Woodbury family papers, 1638-1914.
- Woodbury, Levi, 1789-1851. Levi Woodbury papers.
- Woodbury, Levi, fl. 1780-1781. Levi Woodbury logbooks. 1780-1781.
- Woodhouse, Henry, 1884- Henry Woodhouse collection relating to George Washington, 1656-1930.
- Woodrow Wilson papers, 1786-1957.
- Wright, Elizur, 1804-1885. Elizur Wright papers, 1793-1935.
- Wright family. Nathaniel Wright family papers, 1787-1917.
- Wright, Frank Lloyd, 1867-1959. Frank Lloyd Wright papers, 1894-1958.
- Wright, Irene Aloha, 1879-1972. Irene Aloha Wright papers, 1620-1977.
- Wright, Nathaniel, 1789-1875. Nathaniel Wright family papers, 1787-1917.
- Wunderlich, Georg Martin, 1883-1951. Georg Martin Wunderlich papers, 1897-1951.
- W.W. Corcoran papers, 1791-1896.
- Wyatt, Joseph W. Joseph W. Wyatt papers.
Y
- Young, John Russell, 1840-1899. John Russell Young papers, circa 1840-1959.
- Young, Mary Dow Davids. Mary Dow Davids Young correspondence and diaries.
- Young Men's Christian Association of the City of New York. Committee for the Suppression of Vice. Young Men's Christian Association of the City of New York. Committee for the Suppression of Vice records.