"Map of West Covina" (West Covina, CA: Produced by the West Covina Chamber of Commerce and Participating Businesses), 1979, Sub-Series 1.4, Box: 13, Folder: 1. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/7001 Accessed November 15, 2024.