This item represents a set of aerial photographs currently housed in the California Geological Survey Menlo Park office. Quads include: Chico, El Centro, Fresno, Goldfield, Kingman, Lovelock, Mariposa, Monterey, Reno, Sacramento, Salton Sea, San Bernardino, San Diego, San Francisco, San Jose, San Luis Obispo, Santa Ana, Santa Rosa, Susanville, Ukiah, Walker Lake, Weed. Photo scale: 1:750000.