As the official handbook of the Federal Government, the United States Government Manual is the best source of information on the activities, functions, organization, and principal officials of the agencies of the Legislative, Judicial, and Executive branches. It also includes information on quasi-official agencies and international organizations in which the United States participates. Particularly helpful for those interested in where to go and whom to contact about a subject of concern is each agency's "Sources of Information" section, which provides addresses and telephone numbers for use in obtaining specifics on consumer activities, contracts and grants, employment, and publications.

Known as the Official handbook of the Federal Government. This annual resource provides comprehensive information on the agencies of the legislative, judicial, and executive branches, as well as quasi-official agencies, international organizations in which the United States participates, boards, commissions, and committees. Each agency's description consists of a list of principal officials; a summary statement of the agency's purpose and role in the Federal Government; a brief history of the agency, including its legislative or executive authority; and a description of consumer activities, contracts and grants, employment, and publications.