"Sonoma Valley Guide and Road Map" (Sonoma, CA: Produced by the Sonoma Valley Chamber of Commerce), 1981, Sub-Series 1.4, Box: 11, Folder: 2. Collection of California maps and guidebooks, SC-012. Pfau Library Special Collections. https://archivesspace.csusb.edu//repositories/3/archival_objects/6958 Accessed November 15, 2024.