"San Gabriel Valley City Map...A Gousha Travel Publication" (San Gabriel, CA: Produced by Gousha Travel Publications), 1990, Sub-Series 1.4, Box: 9, Folder: 4. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6913 Accessed November 15, 2024.