"El Cajon California" (El Cajon, CA: Produced by The El Cajon Chamber of Commerce), 1981, Sub-Series 1.1, Box: 2, Folder: 3. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6695 Accessed November 15, 2024.