Achievement Place, 2RO1 MH20030, KU# 4438, Correspondence, 1969 - 1979, Box: 2, Folder: 1. 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/452278 Accessed May 18, 2024.