1. Elliott, E. Donald, April 8, 1981 Hartzer, Ronald F. Indiana University » Center for Documentary Research and Practice » Collection: ohrc041: Economic History of Indiana in the Twentieth Century, 1976-1980
2. Bigham, Darrell E., April 23, 1979 King, R.T. Indiana University » Center for Documentary Research and Practice » Collection: ohrc041: Economic History of Indiana in the Twentieth Century, 1976-1980