Core Grant, MRRC, KU # 4060, Miscellaneous, PSHTC Commitment to Research on MR Written by RLS, April 2, 1965, Box: 18B, Folder: 6. 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/452724 Accessed July 13, 2025.