1. Hogan, Charles A., January 10, 1975 Arthur, Thomas H. Indiana University » Center for Documentary Research and Practice » Collection: ohrc021: Biography: Melvyn Douglas, 1972-1980
2. Zeitlin, Jacob, March 17, 1980 Scobie, Ingrid W. Indiana University » Center for Documentary Research and Practice » Collection: ohrc014: Biography: Helen Gahagan Douglas, 1973-1983
