- North America18 objects
- The Americas18 objects
- United States✖Remove constraint Collection place: United States18 objects
- California17 objects
- Northern California16 objects
- Northeastern California15 objects
- Northern Sierras, Northern California15 objects
- CA-Pla-5 or 6, Placer County, California8 objects
- CA-Pla-5, Placer County, California8 objects
- Placer County, California8 objects
- CA-Plu-36, Plumas County, California5 objects
- Plumas County, California5 objects
- CA-Nev-67, Prosser Creek area, Nevada County2 objects
- Nevada County, California2 objects
- Prosser Creek area, Nevada County, California2 objects
- Big Basin area, Napa County, California1 objects
- CA-Hum-182, Humboldt County, California1 objects
- CA-Nap-240, Napa County, California1 objects
- Humboldt County coast, Humboldt County, California1 objects
- Humboldt County, California1 objects