Most current listed first:

THOMAS:  Bill Summary & Status (1973-)

History of Bills (1983-)

Calendars of the U.S. House of Representatives (weekly)

CIS Index Legislative Histories (1984-) 

Lexis-Nexis Congressional

Federal Legislative Histories, an Annotated Bibliography (Ref. KF 42.2 1994) 

CQ Weekly Report
Congressional Quarterly Almanac Plus (Ref. JK 1.C66)
Congressional Staff Directory (Main JK 1012.C65)
Official Congressional Directory (Ref. JK 1011.U52)