- California2,008 objects
- North America2,008 objects
- Northern California✖Remove constraint Collection place: Northern California2,008 objects
- The Americas2,008 objects
- United States2,008 objects
- Northeastern California1,260 objects
- Modoc County, California716 objects
- North Central California703 objects
- Surprise Valley, Modoc County, California701 objects
- CA-Mod-204, Modoc County, California547 objects
- Sacramento County, California329 objects
- San Joaquin County, California283 objects
- Lassen County, California273 objects
- CA-Las-194, Surprise Valley, Lassen County270 objects
- Surprise Valley, Lassen County, California270 objects
- Northern Sierras, Northern California260 objects
- CA-SJo-68, San Joaquin County, California234 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California200 objects
- CA-Sac-6, Sacramento County, California200 objects
- Calaveras County, California119 objects