1. Cortwright, William H., June 25, 1980 King, R.T Indiana University » Center for Documentary Research and Practice » Collection: ohrc041: Economic History of Indiana in the Twentieth Century, 1976-1980
2. Douglas, Melvyn, December 22, 1973, December 26, 1973, July 2, 1974, July 24, 1974, May 13, 1974 Arthur, Thomas H. Indiana University » Center for Documentary Research and Practice » Collection: ohrc021: Biography: Melvyn Douglas, 1972-1980
