"The Heart of the Harbor Wilmington" (Wilmington, CA; Produced by The Wilmington Chamber of Commerce), 1977, Sub-Series 1.4, Box: 21, Folder: 4. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/10507 Accessed November 15, 2024.