"Sight Seeing in Southern California via Henry L Weisbaum's Golden State Auto Tours" (Produced by Smith Barnes Corp), undated, Sub-Series 2.5, Box: 25, Folder: 3. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/15404 Accessed January 10, 2026.