- British Columbia, Canada1 objects
- California19 objects
- Canada1 objects
- Central California1 objects
- Concrete, Skagit County, Washington1 objects
- Great Basin, United States1 objects
- Kern County, California1 objects
- Mount Shasta, Siskiyou County, California1 objects
- North America22 objects
- North Central California9 objects
- Northeastern California6 objects
- Northern California16 objects
- Northern Sierras, Northern California5 objects
- Northwestern California1 objects
- Northwestern United States1 objects
- Siskiyou County, California1 objects
- Skagit County, Washington1 objects
- South Central California1 objects
- Southwestern United States1 objects
- The Americas22 objects