- California130 objects
- North America130 objects
- Northern California✖Remove constraint Collection place: Northern California130 objects
- The Americas130 objects
- United States130 objects
- North Central California84 objects
- Northeastern California40 objects
- Yolo County, California37 objects
- CA-Yol-13 (Mustang Mound), Yolo County, California36 objects
- Sacramento County, California33 objects
- Siskiyou County, California14 objects
- Northern Sierras, Northern California13 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California12 objects
- CA-Sac-6, Sacramento County, California12 objects
- Calaveras County, California10 objects
- Lower Klamath Lake Area, Siskiyou County, California10 objects
- Lower Klamath Lake, Siskiyou County, California10 objects
- CA-Sis-223, Lower Klamath Lake, Siskiyou County8 objects
- Shasta County, California8 objects
- CA-Cal-83, Calaveras County, California6 objects