An accidental fire in the Library of Congress on Christmas Eve destroys approximately 35,000 volumes, including nearly two-thirds of Jefferson's library.
During the war of 1812, British troops set fire to government buildings in Washington, D.C. The Library’s 3,000 or so reference books, then housed in an unfinished U.S. Capitol, provided ready fuel for the fire. In 1815, after the war of 1812, Congress had purchased the 6,487-volume personal library of former U.S. President Thomas Jefferson to replace the lost collection. Most of which were lost in the 1825 fire.