"Map of Western Angeles National Forest Lake Piru, Castaic Lake, Lake Hughes, Magic Mountain, California" (Produced by Triumph Press, Inc.), 1972, Sub-Series 1.5, Box: 4, Folder: 1. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6737 Accessed November 15, 2024.