Preschool Mainstreaming: A Policy and Implementation Analysis, A. Turnbull in Education Evaluation and Policy Analysis, Volume 4, Number 3, Fall 1982, Box: 1, Folder: 84. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/304837 Accessed June 25, 2025.