Girardeau, Frederic L., Mental Retardation, 2205/1898-3, HD00183-03, July 1, 1968-June 30, 1969, Box: 32, Folder: 10. University of Kansas Schiefelbusch Institute for Life Span Studies records, RG 35. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/453747 Accessed June 26, 2024.