The address of the San Luis Obispo County Historical Society is: 696 Monterey St., San Luis Obispo, CA 93401
The address of the Moniteau County Historical Society is: 201 N High Street, California, MO 65018-1781
The address of the Amador County Historical Society is: Pob 761, Jackson, CA 95642
The address of the Mono County Historical Society is: Po Box 417, Bridgeport, CA 93517
The address of the Lake County Historical Society is: Po Box 1011, Lakeport, CA 95453
The address of the Alameda County Historical Society is: Po Box 13145, Oakland, CA 94661
The address of the Placer County Historical Society is: Po Box 5643, Auburn, CA 95604
The address of the Merced County Historical Society A California Nonprofit Corp is: 21St And N Streets, Merced, CA 95340
The address of the Kings County Historical Society is: Po Box 564, Hanford, CA 93232-0564
The address of the Mariposa County Historical Society is: Po Box 606, Mariposa, CA 95338-0606
The address of the Sierra County Historical Society is: Po Box 95, Sattley, CA 96124-0095
The address of the Tuolumne County Historical Society is: Po Box 695, Sonora, CA 95370-0695
The address of the Humboldt County Historical Society is: Po Box 8000, Eureka, CA 95501-1901