- California50 objects
- North America50 objects
- Northern California✖Remove constraint Collection place: Northern California50 objects
- The Americas50 objects
- United States50 objects
- Northwestern California26 objects
- Northeastern California19 objects
- Modoc County, California8 objects
- Humboldt County, California5 objects
- North Central California5 objects
- Klamath River, Humboldt County, California3 objects
- Northern Sierras, Northern California3 objects
- Big Chico Creek watershed, Butte County, California2 objects
- Butte County, California2 objects
- Chico, Butte County, California2 objects
- McCloud River, Shasta County, California2 objects
- Mendocino County, California2 objects
- Shasta County, California2 objects
- Weitchpec, Humboldt County, California2 objects
- near Weitchpec, Klamath River, Humboldt County2 objects