"Map of Anza-Borrego Desert State Park" (Anza Borrego, CA; Produced by Triumph Press, Inc.), 1972, Sub-Series 2.1, Box: 21, Folder: 2. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/10376 Accessed November 15, 2024.