"Alpine, Amador & Sacramento Counties" (Alpine, Amador, and Sacramento County, CA: Produced by Compass Maps, Inc.), 1988, Sub-Series 1.1, Box: 1, Folder: 1. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6627 Accessed November 15, 2024.