"Gold Map Guide to Motherlode & Old Sacramento" (Sacramento, CA: produced by Compass Maps, Inc.), 1988, Sub-Series 1.4, Box: 5, Folder: 4. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6796 Accessed November 15, 2024.