The Story of Kappa Alpha Psi: a History of the Beginning and Development of a College Greek Letter Organization 1911-1971 by William L. Crump and C. Rodger Wilson, 1972, Box: 12, Folder: 1. Robert C. Caldwell family papers, RH MS 627. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/272342 Accessed May 18, 2024.