Gilbert, William Harlan, Jr. “Memorandum Concerning the Characteristics of the Larger Mixed-Blood Racial Islands of the Eastern United States.” Social Forces 24.4 (May 1946): 438-47.
Background information on triracial isolates and the problems they face or cause. Checklist of facts and bibliography on ten groups (Croatans, pp. 440-42). Calls for a government policy to assimilate these “Native American backward minorities.”