Born in Beattie, Kansas, where her parents, Edward P. and Lina Cooper Debo, were homesteaders, Angle Debo liked to observe that her birth date coincided with the closing of the American frontier. She spent a lifetime examining the historical implications of that settlement for Native American Indians…Debo was the author of numerous books and essays; salient works in addition to those listed in the text include her MA thesis, "The Historical Background of the American Policy of Isolation," Smith College Studies in History 9 (April-July 1924), pp. 71-165; The Five Civilized Tribes: Report on Social and Economic Conditions (1951); Geronimo: The Man, His Time, His Place (1976); and Oklahoma: A Guide to the Sooner State (1941), edited with John M. Oskison.ReferencesFitzpatrick, E. (2004). DEBO, Angie Elbertha. Notable American Women, A Biographical Dictionary: Completing The Twentieth Century (Vol.5), 158.