Hopkins, Bill, Research on Developing Large-Scale Behavioral Training for Teachers of the Handicapped, December 31, 1974, Box: 44, 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/454089 Accessed June 26, 2024.