1. Clifton, Florence G. "Susie", January 6, 1975 Arthur, Thomas H. Indiana University » Center for Documentary Research and Practice » Collection: ohrc021: Biography: Melvyn Douglas, 1972-1980
2. De Sola, Alis, March 26, 1980 Scobie, Ingrid W. Indiana University » Center for Documentary Research and Practice » Collection: ohrc014: Biography: Helen Gahagan Douglas, 1973-1983
3. Greenaway, Roy, July 9, 1983 Scobie, Ingrid W. Indiana University » Center for Documentary Research and Practice » Collection: ohrc014: Biography: Helen Gahagan Douglas, 1973-1983
4. Pick, Walter R., January 7, 1975 Arthur, Thomas H. Indiana University » Center for Documentary Research and Practice » Collection: ohrc021: Biography: Melvyn Douglas, 1972-1980
