- California10,375 objects
- North America10,375 objects
- Northern California✖Remove constraint Collection place: Northern California10,375 objects
- The Americas10,375 objects
- United States10,375 objects
- North Central California6,649 objects
- Sacramento County, California4,066 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California3,008 objects
- CA-Sac-6, Sacramento County, California3,008 objects
- Northeastern California2,971 objects
- San Joaquin County, California2,184 objects
- Modoc County, California1,943 objects
- Surprise Valley, Modoc County, California1,913 objects
- CA-SJo-68, San Joaquin County, California1,677 objects
- CA-Mod-197, Modoc County, California1,243 objects
- Northern Sierras, Northern California1,028 objects
- Calaveras County, California801 objects
- Northwestern California755 objects
- Humboldt County, California716 objects
- Humboldt County coast, Humboldt County, California694 objects