Baer, Don, Training New Personnel for Behavior Modification, MH11739-03, Correspondence, November 25, 1970-July 28, 1971, Box: 3B, Folder: 2. 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/452320 Accessed July 08, 2025.