"San Bernardino County and Lake Mead" (San Bernardino, CA: Produced by Automobile Club of Southern California), undated, Sub-Series 1.4, Box: 22, Folder: 4. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/15233 Accessed January 10, 2026.