"Victor Valley Barstow, Mojave River Valley" (Victorville, CA: Produced by Compass Maps, Inc.), 1991, Sub-Series 1.4, Box: 12, Folder: 4. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6994 Accessed November 15, 2024.