The Congressional Directory presents short biographies of each member of the Senate and House, listed by state or district, and additional data, such as committee memberships, terms of service, administrative assistants and/or secretaries, and room and telephone numbers. It also lists officials of the courts, military establishments, and other Federal departments and agencies, including D.C. government officials, governors of states and territories, foreign diplomats, and members of the press, radio, and television galleries.

Lists every member of the U.S. House and Senate since 1789, with brief biographical entries on each member.