The following are some of the best and most comprehensive resources containing government information. More specific resources can be found on the other tabs in this guide.
The official handbook of the Federal Government, updated to provide comprehensive and authoritative descriptions of the programs and activities of the legislative, judicial, and executive branches. Includes information about quasi-official agencies, international organizations with U.S. membership, and Federal boards, commissions, and committees.
Government Publishing Office website with access to digitized documents from the federal government. (Formerly FDsys).
Contains legislation, Congressional Record, and Committee activities, historical and in the present.
More info on dates of coverage
The U.S. government's official web portal. Find brief description, contact information, and websites for all government agencies and programs. Also available are free government publications on a wide variety of topics.
Over 150,000 datasets in the sciences, social sciences, business, and government.
Regularly updated mirror of all data files linked from data.gov.
In-depth, unbiased coverage of health, social trends, criminal justice, international affairs, education, the environment, technology, and the economy.
Fundamentals of Government Information by 
University of Michigan-Flint