Collection place
- Northern Sierras, Northern California3 objects
- Sonoma County, California3 objects
- Sonoma coast, Sonoma County, California3 objects
- Southern Sonoma coast, Sonoma County, California3 objects
- Tiburon peninsula, Marin County, California3 objects
- Unincorporated eastern Contra Costa County, California3 objects
- Bethel Island, Contra Costa County, California2 objects
- Buena Vista Hills, Kern County, California2 objects
- Buena Vista area, Kern County, California2 objects
- CA-CCo-20, Bethel Island, Contra Costa County2 objects
- CA-CCo-272, San Pablo, Contra Costa County2 objects
- CA-Cal-99 (Winslow Cave), Calaveras County, California2 objects
- CA-Ker-39 or 60, Kern County, California2 objects
- CA-SMa-90, Millbrae, San Mateo County2 objects
- CA-Yub-5 (Arboga site), Yuba County, California2 objects
- Millbrae, San Mateo County, California2 objects
- San Joaquin River Delta, Contra Costa County, California2 objects
- San Mateo County, California2 objects
- San Pablo, Contra Costa County, California2 objects
- Yuba County, California2 objects