Program for the Ceremony of Investiture as Prothonotary Apostolic of the Right Reverend Monsignor John J. Sonefeld, 1952-06-30, Container: Catholic Diocese Of Saginaw - Box 1, Folder: 1. Churches, COL-CHURCHES. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/6819 Accessed December 06, 2025.