Thomas Jefferson Library of Congress Building
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Library in Washington, D.C.
The Thomas Jefferson Building, also known as the Main Library, is the oldest of the Library of Congress buildings in Washington, D.C. Built between 1890 and 1897, it was initially known as the Library of Congress Building.
Address: 10 First St SE, Washington, DC 20003
Hours: Closed ⋅ Opens 10 AM
Phone: (202) 707-5000