Ray Bongartz collection, 112-01, Container: Backlog, 6 boxes; Container: Backlog, 10 small boxes. Providence Public Library.
Ray Bongartz collection, 112-01, Container: Backlog, 6 boxes; Container: Backlog, 10 small boxes. Providence Public Library. https://ppl.libraryhost.com/repositories/2/resources/227 Accessed December 21, 2025.
