Invitation to the 27th Distinguished Alumnus Ceremony, 1965-05-13, Container: Distinguished Alumni (1965, Jack Keeler Zimmerman) - Notebook 18, Case: Page 13. Schools, RG-SCHOOLS. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/33821 Accessed July 10, 2026.