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This Week's Hidden Treasure

Watch a President Age

Watch videos highlighting fascinating artifacts from our treasured collections as presented by Library of Congress curators.
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Did You Know?
“The construction of the Jefferson building was based on a design, submitted in competition, by architects John L. Smithmeyer and Paul J. Pelz. The building cost almost $6.5 million, $150,000 less than expected.”

Calendar of Events

The Library of Congress's personalized site that presents many of books, recordings, photographs, maps and manuscripts from the Library's collections in compelling online exhibitions that reveal our nation's history, knowledge and creativity through primary sources, engaging activities and materials for teachers and students.

Knowledge Quest

Play Knowledge Quest

Go on a quest to discover the hidden meanings of rare treasures from the Library of Congress. Examine historic objects, conquer every challenge, and claim a special reward.  View Quest(s) »

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The Library of Congress Experience is made possible by the benefaction of The United States Congress and support from the private sector. View Donors »