Bush Institute: Involving Parents of Handicapped Children in Sharing Educational Decision-Making, A. Turnbull and H.R. Turnbull, February 15, 1980, Box: 16, Folder: 12. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/305392 Accessed June 18, 2025.