Collection place
- The Americas166 objects
- North America163 objects
- United States127 objects
- California120 objects
- San Francisco Bay Area, California66 objects
- Napa County, California51 objects
- Northern California34 objects
- Berryessa Valley, Napa County, California33 objects
- CA-Nap-93, Berryessa Valley, Napa County33 objects
- Mexico30 objects
- Northern Mexico29 objects
- Northwest Mexico29 objects
- Northeastern California20 objects
- Baja California peninsula, Mexico17 objects
- CA-Mod-197, Modoc County, California17 objects
- Middle Napa Valley, Napa County, California17 objects
- Modoc County, California17 objects
- Napa Valley, Napa County, California17 objects
- Surprise Valley, Modoc County, California17 objects
- Baja California Sur, Mexico16 objects