Collection place
- North America183 objects
- The Americas183 objects
- United States183 objects
- California168 objects
- San Francisco Bay Area, California115 objects
- Contra Costa County, California54 objects
- Northern California49 objects
- Unincorporated western Contra Costa County, California41 objects
- North Central California40 objects
- Marin County, California31 objects
- CA-CCo-259, Rodeo, Contra Costa County30 objects
- Point Reyes, Marin County, California30 objects
- Rodeo, Contra Costa County, California30 objects
- CA-Mrn-232 (Estero Mound), Drakes Bay, Marin County29 objects
- Drakes Bay, Point Reyes, Marin County29 objects
- Estero de Limantour, Drakes Bay, Marin County29 objects
- San Joaquin County, California23 objects
- CA-SJo-68, San Joaquin County, California22 objects
- Sacramento County, California17 objects
- Nevada15 objects