Beach Center on Families and Disability, Board Meeting [7 of 8]: NAB [National Advisory Board] 1989 Meeting, 1989, Box: 10, Folder: 14. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/305208 Accessed June 24, 2025.