- California119,438 objects
- North America119,438 objects
- Northern California✖Remove constraint Collection place: Northern California119,438 objects
- The Americas119,438 objects
- United States119,438 objects
- North Central California55,219 objects
- Northeastern California44,092 objects
- Sacramento County, California29,077 objects
- Northwestern California20,124 objects
- Northern Sierras, Northern California13,237 objects
- Lassen County, California13,150 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California12,487 objects
- CA-Sac-6, Sacramento County, California12,480 objects
- Modoc County, California9,451 objects
- San Joaquin County, California9,268 objects
- Humboldt County, California8,567 objects
- Surprise Valley, Modoc County, California7,548 objects
- Mendocino County, California5,092 objects
- CA-Mod-204, Modoc County, California4,958 objects
- Siskiyou County, California4,352 objects