"Southern California Mountain Trail Hiking" (Southern California: Produced by the Automobile Club of Southern California), 1978, Sub-Series 2.5, Box: 18, Folder: 4. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/7217 Accessed November 15, 2024.