- North America✖Remove constraint Collection place: North America26 objects
- The Americas26 objects
- United States26 objects
- California25 objects
- San Francisco Bay Area, California24 objects
- San Francisco County, California23 objects
- San Francisco Waterfront, San Francisco, San Francisco County23 objects
- San Francisco, San Francisco County, California23 objects
- Site N-5 (North Shore Pump Station), San Francisco Waterfront, San Francisco23 objects
- Berryessa Valley, Napa County, California1 objects
- CA-Cal-157, Calaveras County, California1 objects
- CA-Nap-93, Berryessa Valley, Napa County1 objects
- Calaveras County, California1 objects
- Grand Gulch #13, San Juan County, Southern Utah1 objects
- Napa County, California1 objects
- Northeastern California1 objects
- Northern California1 objects
- Northern Sierras, Northern California1 objects
- San Juan County, Utah1 objects
- Southern Utah1 objects