Google US Government Try here for quick access to Federal offices and departments.
Government Information Locator Service The GPO's searchable database of publicly available Federal information resources, including electronic information resources.
GPO Access Administrative Decisions, Core Documents of US Democracy, Code of Federal Regulations, Federal Register, Congressional Record, US Code, Congressional Bills, and more.
LOUIS Library Of Unified Information Sources. Database of Federal depository documents from the executive and legislative branches of government.
National Archives and Records Administration (NARA) Access to Archival Databases (AAD) AAD is the first publicly accessible application developed under the auspices of the National Archives Electronic Records Archives Program. The Electronic Records Archives Program is addressing the larger challenges of preserving the increasing variety and volume of Government records that have been created and stored in electronic form. AAD provides researchers with online access to more than 350 databases, which were created by over 20 Federal agencies. NARA plans to expand the system to more than 500 databases.