This information can be found from a variety of sources. Following are some of the sources available: Contact the Bureau of Indian Affairs Office of Public Affairs 1849 C Street, N.W., Mail Stop 4542-MIB Washington, DC 20240-0001 Office: 202-208-3711 Fax: 202-501-1516 Refer to Revenue Procedure 2008-55. This document contains a list of the federally recognized tribes. Check the Bureau of Indian Affairs for the most recent listing of federally recognized Indian tribes. Contact the IRS, Office of Indian Tribal Governments at 202-317-8900 or you may write to this address: Internal Revenue Service 1111 Constitution Avenue N.W., T:GE:ITG Washington, D.C. 20224 Webpage: IRS.gov/tribes Return to List of FAQs