Library of Congress
Loc: Biographical Directory of the u.s. Congress
This site provides a link to 13,000+ members who have served in the United States Congress, 1774 - present. Accompanying biographies and pictures, when available, are very informative. This site is well-designed and easy to navigate.
US Government Publishing Office
U.s. Government Publishing Office: Biographical Directory of Congress
The Government has supplied a comprehensive biographical compilation of the members of Congress from 1774 to 2005. Each Congress is listed as well as alphabetical biographies.