"Map of Modoc County Recreation Area" (Modoc, CA: Produced by Triumph Press, Inc.), undated, Sub-Series 1.3, Box: 5, Folder: 3. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6789 Accessed November 15, 2024.