1. Halleck, Charles A., December 15, 1969 Patterson, James T. Indiana University » Center for Documentary Research and Practice » Collection: ohrc064: Indiana Politics, 1969, 1976, 1978
2. Webb, Robert S., June 17, 1973 Tudor, David F. Indiana University » Center for Documentary Research and Practice » Collection: ohrc103: William E. Jenner and Indiana Politics, 1971-1974
