Chapter 2: Public Policy and Developmental Disabilities, H.R. Turnbull, Stowe, A. Turnbull, Schrandt in Handbook of Developmental Disabilities, 2007, Box: 2, Folder: 31. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/304917 Accessed June 22, 2025.