American Social History Project, City University of New York, "Who Built America? series" [1]; Herbert Gutman, The Black Family in Slavery and Freedom 1750–1925, (1977) p. 25, said "Critics, including such able scholars as E. Franklin Frazier, Kenneth M. Stampp, and Stanley M. Elkins, sharply rejected the racial assumptions of Phillips and his followers but focused on the same question."
Fred Landon and Everett E. Edwards, "A Bibliography of the Writings of Professor Ulrich Bonnell Phillips," Agricultural History 8#4 (1934), pp. 196-218 in JSTOR
"Introduction" in Jane Dailey, Glenda Elizabeth Gilmore, and Bryant Simon, eds. Jumpin' Jim Crow: Southern Politics from Civil War to Civil Rights (2000), online excerpt.