Draper, Larry, Fred Sampson, and John Hollis, Learning Deficiencies: An Immunological Approach, January 1, 1972-December 31, 1974, Submitted, May 17, 1971, Box: 25, Folder: 33. 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/452942 Accessed July 12, 2025.