Enhancing Quality of Life of Families of Children and Youth with Disabilities in the United States, A. Turnbull and H.R. Turnbull, 2000, Box: 2, Folder: 122. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/305008 Accessed June 15, 2025.