"Calaveras Big Trees State Park...A Unit of the California State Park System" (Calaveras, CA: Produced by Department of Parks & Recreation), 1970, Sub-Series 1.1, Box: 1, Folder: 5. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6668 Accessed November 15, 2024.