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 (PDF). This document contains a list of the federally recognized tribes.
- Check the Federal Register 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, T:GE:ITG, 1111 Constitution Avenue N.W., Washington, D.C. 20224. The Office of Indian Tribal Governments' webpage address is: IRS.gov/tribes.