"Union City Industrial- Commercial Map" (Union City, CA: Produced by the Union City Chamber of Commerce), 1977, Sub-Series 1.4, Box: 12, Folder: 3. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6985 Accessed November 15, 2024.