Collection place
- North America17 objects
- The Americas17 objects
- United States17 objects
- Mercer County, New Jersey11 objects
- New Jersey11 objects
- Northeastern United States11 objects
- California6 objects
- Trenton, Mercer County, New Jersey6 objects
- Northern California4 objects
- Northwestern California3 objects
- Bilbee's Sand Pit, Trenton, Mercer County2 objects
- CA-Tri-58, Trinity County, California2 objects
- NJ-NL-1, New Jersey2 objects
- San Francisco Bay Area, California2 objects
- San Francisco County, California2 objects
- San Francisco, San Francisco County, California2 objects
- Trinity County, California2 objects
- Trinity Lake, Trinity County, California2 objects
- CA-Hum-112, Humboldt County, California1 objects
- CA-SJo-154, San Joaquin County, California1 objects