Explore Federal Government (Documents Center at UMich Library)

Brochures and Pamphlets (University at Buffalo Libraries, SUNY)
A Digital Collection of general interest and consumer-oriented government pamphlets.

Google Uncle Sam (Google's U.S. Government Search)

Government Documents E-Library

Government Information Resources (University of Virginia)

Government Publications Library (University of Colorado at Boulder)

U.S. Government Documents Ready Reference Collection (Columbia University Libraries)