- California9,413 objects
- North America9,413 objects
- Northern California✖Remove constraint Collection place: Northern California9,413 objects
- The Americas9,413 objects
- United States9,413 objects
- North Central California5,771 objects
- Sacramento County, California3,202 objects
- Northeastern California2,893 objects
- San Joaquin County, California2,176 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California2,146 objects
- CA-Sac-6, Sacramento County, California2,146 objects
- Modoc County, California1,867 objects
- Surprise Valley, Modoc County, California1,844 objects
- CA-SJo-68, San Joaquin County, California1,671 objects
- CA-Mod-197, Modoc County, California1,169 objects
- Northern Sierras, Northern California1,026 objects
- Calaveras County, California800 objects
- Northwestern California749 objects
- Humboldt County, California716 objects
- Humboldt County coast, Humboldt County, California694 objects