"Orange County Western Section...People Really Count Along the Chevron Way" (Orange County, CA: Produced by Chevron Oil Company), 1973, Sub-Series 1.3, Box: 6, Folder: 2. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6810 Accessed November 15, 2024.