Library of Congress collections described by finding aids. Listed by collection titles and by names of creators and collectors.
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. American Commission to Negotiate Peace. U.S. American Commission to Negotiate Peace records, 1898-1919.
- United States. Army. 92nd Infantry Division collection, 1926-2007.
- United States. Army. Infantry Division, 92nd. United States. Army. 92nd Infantry Division collection, 1926-2007.
- United States. Army. Signal Intelligence Service. Venona Project records, 1940-1996.
- United States Capitol Historical Society oral history interviews, 1976-1991.
- United States Capitol Historical Society. United States Capitol Historical Society oral history interviews, 1976-1991.
- United States. Coast Guard. Historian's Office. U.S. Coast Guard. Historian's Office collection, 1746-1951.
- United States. Commission on CIA Activities within the United States. U.S. Commission on CIA Activities within the United States records, 1941-1975.
- United States. Congress. House. Office of the Clerk. United States. Congress. House. Office of the Clerk records. 1856-1888.
- United States. Congress. Senate. Committee on the Budget. U.S. Congress. Senate. Committee on the Budget. Oral History Project oral history interviews, 2006.
- United States. Congress. Senate. Historical Office. U.S. Congress. Senate. Historical Office oral history interviews, 1976-2003.
- United States Constitution collection, 1773-1944.
- United States. Continental Congress records, 1765-1825.
- United States. Continental Congress. United States. Continental Congress records, 1765-1825.
- United States. Continental Navy records, 1775-1776.
- United States. Continental Navy. United States. Continental Navy records, 1775-1776.
- United States. Dept. of Labor. Office of Policy Planning and Research. Negro family : the case for national action. 1965.
- United States. Federal Trade Commission. United States. Federal Trade Commission records. 1914-1934.
- United States finance collection, 1761-1908.
- United States. Forest Service records, 1902-1953.
- United States. Forest Service. United States. Forest Service records, 1902-1953.
- United States Information Agency Artistic Ambassador Program musical commissions, 1973-1988.
- United States Information Agency. Artistic Ambassador Program. USIA Artistic Ambassador Program musical commissions, 1973-1988.
- United States. Joint Army and Navy Committee on Welfare and Recreation. Sub-Committee on Music. Joint Army and Navy Committee on Welfare and Recreation, Sub-Committee on Music papers, 1941-1946.
- United States. Legation (France) U.S. Legation (France) letterbooks. 1779-1782.
- United States. Lincoln Sesquicentennial Commission Office of the Research Director records, 1957-1960.
- United States. Lincoln Sesquicentennial Commission. Office of the Research Director. United States. Lincoln Sesquicentennial Commission Office of the Research Director records, 1957-1960.
- United States. National Advisory Committee for Aeronautics. United States. National Advisory Committee for Aeronautics records.
- United States. National Park Service. Mid-Atlantic Regional Office. Working in Paterson Project collection, 1993-2002.
- United States. National Park Service. North Atlantic Regional Office. Maine Acadian cultural survey collection, 1991.
- United States Naval Observatory records, 1830-1900.
- United States Naval Observatory. United States Naval Observatory records, 1830-1900.
- United States. Office of War Information. World War II rumor project collection, 1942-1943.
- United States. President's Research Committee on Social Trends. U.S. President's Research Committee on Social Trends records, 1924-1936.
- United States. War Dept. records, 1794-1848.
- United States. War Dept. United States. War Dept. records, 1794-1848.
- United States Work Projects Administration records, 1524-1975.
- United States. Work Projects Administration. United States Work Projects Administration records. (2)
- United States. Work Projects Administration. United States Work Projects Administration records, 1524-1975.
- United States. Works Progress Administration. Works Progress Administration records.
- Universal Negro Improvement Association. Universal Negro Improvement Association records. 1918-1962.
- University of Pennsylvania. Foreign Policy Research Institute. Guatemalan documents collection, 1944-1954.
- Untermeyer-Frost collection, 1913-1964.
- Untermeyer, Louis, 1885-1977. Louis Untermeyer papers, 1955-1967.
- Untermeyer, Louis, 1885-1977. Untermeyer-Frost collection, 1913-1964.
- Updike, John. Centaur (1963).
- Updike, John. John Updike papers, 1962-1969.
- Updike, John. Midpoint, and other poems (1969).
- Updike, John. Of the farm (1965).
- Updike, John. Poorhouse fair (1958).
- Ursinus, Oskar. Oskar Ursinus papers, 1908-1943.
- U.S. American Commission to Negotiate Peace records, 1898-1919.
- U.S. Coast Guard. Historian's Office collection, 1746-1951.
- U.S. Commission on CIA Activities within the United States records, 1941-1975.
- U.S. Congress. Senate. Committee on the Budget. Oral History Project oral history interviews, 2006.
- U.S. Congress. Senate. Historical Office oral history interviews, 1976-2003.
- U.S. President's Research Committee on Social Trends records, 1924-1936.
- U.S. Work Projects Administration. Federal Music Project collection, 1935-1948.
- USIA Artistic Ambassador Program musical commissions, 1973-1988.