"Cuyamaca Rancho State Park" (Produced by The Resources Agency Department of Parks & Recreation), 1969, Sub-Series 2.5, Box: 21, Folder: 2. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/10387 Accessed November 15, 2024.