Menninger School of Psychiatry, Topeka, KS -- Letchworth Village Graduate Course in Mental Retardation, 1964, Box: 1, Folder: 20. Papers of Dr. Kathryn Rainbow-Earhart, RH MS 1294. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/184453 Accessed May 16, 2024.