Mines and mineral resources of the counties of Colusa, Glenn, Lake, Marin, Napa, Solano, Sonoma, Yolo

Mines and Mineral Resources of the Counties of Fresno, Kern, Kings, Madera, Mariposa, Merced, San Joaquin, Stanislaus

Mines and Mineral Resources of the Counties of Monterey, San Benito, San Luis Obispo, Santa Barbara, Ventura