Collection place
- Southwestern United States19 objects
- Udayliyah, Saudi Arabia19 objects
- Arizona18 objects
- Mendocino County, California18 objects
- Northwestern California18 objects
- Round Valley, Mendocino County, California17 objects
- Southern California17 objects
- Virginia17 objects
- Contra Costa County, California16 objects
- Alamo, Contra Costa County, California15 objects
- CA-CCo-311, Alamo, Contra Costa County15 objects
- Montana15 objects
- Oceania15 objects
- Unincorporated central Contra Costa County, California15 objects
- Wisconsin15 objects
- Alabama14 objects
- Kansas14 objects
- NV-Ln-1720 (Oceana Spring), Lincoln County, Nevada14 objects
- Napa Valley, Napa County, California14 objects
- Washington, D.C.14 objects