"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."
Federal Agencies (Louisiana State University) provides browsing alphabetically or by hierarchy, as well as searching by keyword or phrase.
Local Federal Agencies - See the list on the Federal Government Information & Related Resources page.
National Contact Center (Federal Citizen Information Center) - "Have a question about Federal programs, benefits, or services? Call our information specialists toll-free...between 8 a.m. and 8 p.m. eastern time Monday through Friday, except Federal holidays. Use our online knowledgebase containing all of our frequently requested information."
Leadership Directories (subscription cancelled due to budget cuts) provide Yellow Book listings for federal staff, including regional federal offices.