Draper, Larry, Fred Sampson, and John Hollis, Learning Deficiencies: An Immunological Approach, HD-06506-01, This Copy Back from PHS, August, 1971, Box: 25, Folder: 34. 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/452943 Accessed July 20, 2025.