Many sites have names from tribal rolls and other documentation.
Volunteer Here Links - General Establishing American Indian Ancestry BIA's guide to tracing genealogical roots. A good starting point. American Indian Records on Microfilm NARA's online catalog of microfilm records concerning American Indians at the National Archives. Essentials of Indian Citizenship Tracing Your Indian Ancestors Information from the Oklahoma Historical Society concerning Indian citizenship. Native American Genealogy - Osiyo Now have pages up on Cherokee, Choctaw, Lakota with lots more coming for Native American Genealogy.