The Cabinet includes the Vice President and the heads of 15 executive departments — the Secretaries of Agriculture, Commerce, Defense, Education, Energy, Health and Human Services, Homeland Security, Housing and Urban Development, Interior, Labor, State, Transportation, Treasury, and Veterans Affairs, as well as the Attorney General.
The official source for comprehensive information on federal agencies is the U.S. Government Manual. This directory also includes information on quasi-official agencies; international organizations in which the United States participates; and boards, commissions, and committees. Additional directories are available online.