PSHTC, Kral, Paul and Howard Bair, Neuroscience Research Program-The Brain and Developmental Deficiencies: Behavioral and Physiological Investigations of Learning and Memory Relevant to Mental Retardation, Research Proposal, March 8, 1971, Box: 62, Folder: 30. 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/455451 Accessed May 14, 2025.