"Street Guide and Automobile Road Map of San Diego City, County and Southern California" (San Diego, CA: Produced by San Diego Trust & Savings Bank), undated, Sub-Series 1.4, Box: 22, Folder: 3. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/15220 Accessed January 10, 2026.