American history from 1820-1861 is interwoven with the history of the Capitol as it was expanded to accommodate a growing government body. A timeline of significant events in the debates over slavery, the addition of free and slave...

The Library of Congress presents research materials about the building of the United States Capitol. Conceiving of themselves as inheritors, guardians, and conveyors of Western civilization, our founding fathers slowly built a Capitol...

This site from The Arlington National Cemetery contains a biography of L'Enfant (1754-1852) and information about the L'Enfant Monument. You will also find quotes about him, as well as by him. This site also includes several pictures.