Correspondence between Schuster, Robert O. and Peter Ashlock, 1952-1956, 1967-1968, 1980-1981, 1983, Box: 4, Folder: 112. Personal papers of Peter D. Ashlock, PP 515. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/395172 Accessed May 10, 2024.