Morrison 1919, p. 369 Morrison, Frank (Secretary) (1919), "Tanner, John", American Federation of Labor: History, Encyclopedia, Reference Book, Washington, D.C.: American Federation of Labor, p. 369
Sobel & Raimo 1978 Sobel, Robert; Raimo, John, eds. (1978), Biographical Directory of the Governors of the United States, 1789–1978, vol. 1, Westport: Meckler Books – quoted in Illinois Governor John Riley Tanner by the National Governors Association