Walter Wadsworth Bradley

• 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