- California18 objects
- North America18 objects
- Northern California✖Remove constraint Collection place: Northern California18 objects
- The Americas18 objects
- United States18 objects
- Northwestern California10 objects
- Modoc County, California7 objects
- Northeastern California7 objects
- Humboldt County, California5 objects
- Humboldt County coast, Humboldt County, California3 objects
- Trinidad Bay, Humboldt County, California3 objects
- Trinidad, Humboldt County, California3 objects
- CA-Hum-170, Humboldt County, California2 objects
- Klamath River below Weitchpec, Humboldt County, California2 objects
- Klamath River, Humboldt County, California2 objects
- CA-Hum-169 (Tsurai), Humboldt County, California1 objects
- Kepel, Klamath River, Humboldt County1 objects
- Los Molinos Mound 8, near Los Molinos, Tehama County1 objects
- Near Los Molinos, Tehama County, California1 objects
- North Central California1 objects