"Passages: 1989", Plan For Instructional Computing, Tentative Improvement Plans for high school facilities, NFUSSD Directory 1989, Box: 9, Folder: 5. R. E. "Tuck" Duncan papers, RH MS 951. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/50344 Accessed February 17, 2025.