Correspondence and miscellaneous papers, 1945, 1954, 1957, 1960-68, 1970-74 & 1976-85, Box: 27, Folder: 1-3. Wallace E. Pratt papers, RH MS 870. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/33897 Accessed June 02, 2024.