"Map of Yucaipa Valley...Green Valley in the Golden State" (Yucaipa, CA: Produced by the Calimesa Chamber of Commerce and Yucaipa Chamber of Commerce), 1980, Sub-Series 1.4, Box: 13, Folder: 3. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/7015 Accessed November 15, 2024.