Center Training, HD-07066-05, #2402/1840, Schiefelbusch/Warren, April, 1982, Box: 12, Folder: 4. 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/452514 Accessed July 16, 2025.