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David B. Davis, James Cropper and the British Anti-Slavery Movement, 1821–1823, The Journal of Negro History Vol. 45, No. 4 (Oct., 1960), pp. 241–258 at p. 250. Published by: Association for the Study of African American Life and History. DOI: 10.2307/2716584 JSTOR2716584
Cratis D. Williams and Martha H. Pipes, The Southern Mountaineer in Fact and Fiction: Part I, Appalachian Journal Vol. 3, No. 1 (Autumn 1975), pp. 8–61 at p. 46. Published by: Appalachian Journal and Appalachian State University JSTOR40932076
William E. Unrau, An International Perspective on American Indian Policy: The South Australian Protector and Aborigines Protection Society, Pacific Historical Review Vol. 45, No. 4 (Nov., 1976), pp. 519–538. Published by: University of California Press. DOI: 10.2307/3638101 JSTOR3638101