Wilkins, David Eugene. “An Analysis of Colonial, State, and Federal ‘Definitions of Indian’.” Thesis. U of Arizona, 1982.
Useful background information on state definitions of “free persons of color”; mixed-blood Indians’ relations with the federal government; the concept of measuring degree of Indian blood; and the Indian Reorganization Act. Brief mention, pp. 117-18, of Robeson County Indians’ attempt at recognition as Siouans and Carl Seltzer’s “highly questionable” analysis of physical characteristics.