"San Diego Harbor Excursion" (San Diego, CA: Produced by Harbor Excursions), undated, Sub-Series 2.4, Box: 17, Folder: 4. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/7138 Accessed November 15, 2024.