Collection place
- California43 objects
- North America43 objects
- The Americas43 objects
- United States43 objects
- San Francisco Bay Area, California28 objects
- Contra Costa County, California13 objects
- Berryessa Valley, Napa County, California11 objects
- Napa County, California11 objects
- Northern California11 objects
- CA-Nap-93, Berryessa Valley, Napa County10 objects
- El Sobrante, Contra Costa County, California9 objects
- North Central California9 objects
- Unincorporated western Contra Costa County, California9 objects
- CA-CCo-151, El Sobrante, Contra Costa County8 objects
- CA-Sac-168 (Erich site), Sacramento County, California8 objects
- Sacramento County, California8 objects
- CA-SBa-7, Carpinteria, Santa Barbara County3 objects
- Carpinteria, Santa Barbara County, California3 objects
- Santa Barbara County, California3 objects
- Southern California3 objects