PSHTC, Bair and Leland, VRA Final Project Report, July, 1967, Box: 62, Folder: 11. University of Kansas Schiefelbusch Institute for Life Span Studies records, RG 35. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/455432 Accessed July 17, 2025.