1. 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
2. Halleck, Charles A., December 15, 1969 Patterson, James T. Indiana University » Center for Documentary Research and Practice » Collection: ohrc064: Indiana Politics, 1969, 1976, 1978
