"Moreno Valley...Perris Valley" (Moreno Valley, CA: Produced by the Rand Mcnally Map Services Company), undated, Sub-Series 1.3, Box: 5, Folder: 4. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6795 Accessed November 15, 2024.