Mental Retardation - An Annual Review - IV / A Taxonomy of Federal Programs Affecting Developmental Disabilities, Boggs / Federal Legislation, Boggs, 1978; 1971, Box: 8, Folder: 8. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/305428 Accessed January 02, 2025.