US Government Publishing Office
Ben's Guide to u.s. Government: Government Buildings: The u.s. Capitol (3 5)
Provides brief historical facts on the U.S. Capitol, home of Congress in Washington, DC.
PBS
Pbs News Hour: Slaves Built the White House and u.s. Capitol
Video shows author Jesse Holland as he discusses the involvement of slaves in the building of the White House and the U.S. Capitol.