Bureau of Land Management Directory
Includes a phone directory by state and by office, program contacts, and a national map of points of interest.

Department of the Interior E-Mail Directory
Searchable by first name and/or last name and/or agency initials

National Park Service Address Book
Database is searchable by park name, region, state, park classification, or person's name. Information includes park address, business office phone and fax, site manager, and e-mail.

Tennessee Valley Authority
Includes contact information for TVA headquarters and other offices.

US Army Corps of Engineers People Locator
Includes a searchable e-mail directory and addresses of Corps offices.

US Environmental Protection Agency Personnel Locator
Searchable by first name, last name, or site. Information displayed includes phone, e-mail, and mailing address

US Fish and Wildlife Service
Database is searchable by unit name, state, region, and/ or facility type. Each listing includes location, phone, web address, and e-mail.