Plan of the Principal Floor of the U.S. Capitol, by B. Henry Latrobe, 1817

Prepared for President James Monroe, this plan shows the arrangement of the two wings that were then being restored after the devastating fire of 1814. It also shows Latrobe's proposed plan for the center building that had not yet been authorized or funded. The rotunda was labeled: "Grand Vestibule. Hall of inauguration, of impeachment, and of all public occasions." A large, three-part room for the Library of Congress was provided in the west projection. Reading rooms, committee rooms, and two rooms for the librarian were provided nearby.

Prints and Photographs Division, Library of Congress