Cheerio Club -- Formal, invitations, 1959-1960, 1962, 1964-1965, 1968, 1975-1976, 1988, Box: 3, Folder: 25. Robert C. Caldwell family papers, RH MS 627. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/272621 Accessed November 23, 2024.