Collection place
- North America38 objects
- The Americas38 objects
- United States38 objects
- California37 objects
- Northern California35 objects
- North Central California17 objects
- Northeastern California15 objects
- Northern Sierras, Northern California15 objects
- Plumas County, California12 objects
- Butte County, California7 objects
- Quincy, Plumas County, California6 objects
- Big Chico Creek watershed, Butte County, California4 objects
- Chico, Butte County, California4 objects
- Greenville, Plumas County, California4 objects
- Indian Valley, Plumas County, California4 objects
- Mendocino County, California3 objects
- Northwestern California3 objects
- Round Valley, Mendocino County, California3 objects
- Dogwood Creek, Butte County, California2 objects
- Lake Oroville/Upper Feather River watershed2 objects