Collection place
- North America2,243 objects
- The Americas2,243 objects
- United States2,240 objects
- California2,138 objects
- San Francisco Bay Area, California1,447 objects
- Contra Costa County, California815 objects
- North Central California654 objects
- Northern California654 objects
- CA-CCo-138, Oakley, Contra Costa County591 objects
- Oakley, Contra Costa County, California591 objects
- San Joaquin County, California501 objects
- CA-SJo-68, San Joaquin County, California425 objects
- Lindsey Slough, Solano County, California242 objects
- Solano County, California242 objects
- CA-Sol-2, Solano County, California214 objects
- Napa County, California144 objects
- Napa Valley, Napa County, California144 objects
- Marin County, California140 objects
- Unincorporated western Contra Costa County, California136 objects
- Sacramento County, California130 objects