1. Lythgoe, Richard F., May 3, 1979 King, R.T. Indiana University » Center for Documentary Research and Practice » Collection: ohrc041: Economic History of Indiana in the Twentieth Century, 1976-1980
2. Mabrey, Roy, May 14, 1997 White, Samuel Indiana University » Center for Documentary Research and Practice » Collection: ohrc040: Economic Development in Indiana, 1996-1997
