Phi Delta Psi Membership Card - Archives of The Museum of the San Fernando Valley - Gift of Vic Salerno (click on image to enlarge)
Fraternities and sororities were a very serious matter on college campuses in the 1950s and 60s. The Psi Delta Psi Fraternity had chapters at LA Valley and Pierce Colleges, San Fernando Valley State College (CSUN) and LA City College. Later on, the organization had chapters at Moorpark College and Virginia Institute of Technology.
The Museum of the San Fernando Valley archives the history and memorabilia of these organizations.