UNITED STATES

Core Documents of U.S. Democracy from GPO Access
Federal Bulletin Board from GPO Access
FirstGov, a U.S. Government website that provides free rapid access to government information and services to the public
Historical Government Publication from World War II - by SMU Libraries. This is a digital collection of more than 300 U.S. Government publications distributed during the course of the war.
LLRX Guide to the U.S. Federal Legal System:  Web-Based Publicly Accessible Sources - by Gretchen Feltes
LLRX Guide: A Cornucopia of Government Search Engines - by Peggy Garvin. Useful for finding government information that may not be on official U.S. government websites.
Plum Book provides comprehensive information on thousands of Federal civil service leadership and support positions in the legislative and executive branches of the Federal Government
National Archives' Access to Archival Databases System (AAD)
SearchGov.com
United States Government Manual - The official handbook of the Federal Government provides comprehensive information on the agencies of the legislative, judicial, and executive branches. It also includes information on quasi-official agencies, international organizations in which the United States participates, and boards, commissions, and committees. The Manual begins with reprints of the Declaration of Independence and the U.S. Constitution. The new edition of the Manual is available annually in late summer.