Achievement Place, Phase IV, Supplement, P.I. Curtis Braukmann, May 30, 1980, Box: 1B, Folder: 5. 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/452264 Accessed February 18, 2025.