Hoyt, Jr., Robert K., Film Contract between Bureau of Child Research and the Tri-County Special Education Cooperative, Child Find, April 15, 1976, Box: 44, 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/454117 Accessed June 26, 2024.