Core Grant, MRRC, KU # 4060, Miscellaneous, Meeting of Center Directors of Mental Retardation Research Center, Nashville, Tennessee, October 19-20, 1969, Box: 18B, Folder: 31. 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/452749 Accessed May 16, 2025.