- California6,454 objects
- North America6,454 objects
- Northeastern California✖Remove constraint Collection place: Northeastern California6,454 objects
- Northern California6,454 objects
- The Americas6,454 objects
- United States6,454 objects
- Northern Sierras, Northern California2,742 objects
- Modoc County, California1,668 objects
- Placer County, California1,439 objects
- Surprise Valley, Modoc County, California1,399 objects
- Lassen County, California1,331 objects
- Martis Valley, Placer County, California1,135 objects
- CA-Mod-204, Modoc County, California689 objects
- Nevada County, California635 objects
- Siskiyou County, California537 objects
- San Juan Ridge, Nevada County, California524 objects
- CA-Nev-15, Nevada County, California406 objects
- Karlo area, Lassen County, California342 objects
- CA-Las-7, Karlo area, Lassen County338 objects
- Surprise Valley, Lassen County, California275 objects