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Progressive Era Alabama Congressional Leadership

Johnson, Evans C. Oscar W. Underwood: A Political Biography. Baton Rouge: Louisiana State University Press, 1980.

Pittman, Walter E. Jr. "Richard P. Hobson, Crusader." Ph.D. dissertation, University of Georgia, 1968.

Rodabaugh, Karl. "Congressman Henry D. Clayton, Patriarch in Politics: A Southern Congressman During the Progressive Era." Alabama Review 31 (April 1978): 110-120.

Rogers, William Warren, Robert David Ward, Leah Rawls Atkins, and Wayne Flynt. Alabama: The History of a Deep South State. Tuscaloosa: University of Alabama Press, 1994.

Sheldon, Richard. "Richmond Pearson Hobson as a Progressive Reformer." Alabama Review 25 (October 1972): 243-261.

Underwood, Oscar. Drifting Sands of Party Politics. New York: The Century Co., 1928.

Ward, Robert D. "The Political Career of Stanley Hubert Dent, Jr." M.A. thesis, Auburn University, 1951.