Series 9 Photographs and Audiovisual Material; Subseries 2 Agricultural and Historical Photographs, https://calisphere.org/collections/27012/?rows=48&q=&relation_ss=Series%209%20Photographs%20and%20Audiovisual%20Material%3B%20Subseries%202%20Agricultural%20and%20Historical%20Photographs. University of California, Merced Library. https://public.ucm.aspace.cdlib.org/repositories/4/digital_objects/136 Accessed June 09, 2025.