Yearbooks and yearbook information, 1948-1949, 1957-1959, 1962-1965, 1967-1968, Box: 2, Folder: 14. Theta Boulé, Sigma Pi Phi papers, RH MS 425. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/61124 Accessed February 17, 2025.