- California4 objects
- North America4 objects
- Northern California✖Remove constraint Collection place: Northern California4 objects
- The Americas4 objects
- United States4 objects
- North Central California2 objects
- CA-Col-1 (Miller Mound), Colusa County, California1 objects
- CA-Sac-64 (Peter Houth Mound), Sacramento County, California1 objects
- Colusa County, California1 objects
- Mendocino County, California1 objects
- Northeastern California1 objects
- Northern Sierras, Northern California1 objects
- Northwestern California1 objects
- Round Valley, Mendocino County, California1 objects
- Sacramento County, California1 objects