Collection place
- North Central California Coast6 objects
- Skagit County, Washington6 objects
- Western Washington6 objects
- Central California5 objects
- Lassen County, California5 objects
- South Central California5 objects
- Susanville, Lassen County, California5 objects
- Asia4 objects
- Coastal Peru4 objects
- Deer Creek, Tehama County, California4 objects
- Oregon4 objects
- San Francisco County, California4 objects
- Tehama County, California4 objects
- Vancouver, British Columbia, Canada4 objects
- Wyoming4 objects
- near Deer Creek, Tehama County, California4 objects
- Amazon Basin, Peru3 objects
- British West Africa (historic)3 objects
- Central Oregon3 objects
- Concrete, Skagit County, Washington3 objects