Catalog of U.S. Government Publications. (1976-)
Declassified Government Documents
From the National Security Archive at George Washington University.
Central access point for searching, and acquiring government information.
Provides free electronic access to Federal information.
Marcive (On Campus Only)
Catalog of government publications since July 1976.
New Electronic Titles (GPO)
Government publications available in electronic format.
USA.gov for science
U.S. Federal Government Agencies Directory (LSU Libraries)
Lists current U.S. Federal Government agencies as represented in the U.S. Government Manual.
University of Michigan Documents Center
Excellent overall subject breakdown of government information.