The Social and Cultural History of the Five Civilized Tribes was commissioned by the Smithsonian Institution for inclusion in their series, Handbook of North American Indian, Volume 14, Southeast. The manuscript was dictated to tape in 1979 in Eastern Oklahoma by Mr. Thomas. The transcript was developed by the Native American Studies Program at Claremore college (now Rogers State college) and edited/revised by Mr. Fink. The manuscript was never published.
Available at: http://works.bepress.com/robert_thomas/23/