Collection place
- North America1,993 objects
- The Americas1,993 objects
- United States1,972 objects
- California48 objects
- Southern Great Lakes states, United States30 objects
- San Francisco Bay Area, California27 objects
- Great Plains, North America18 objects
- San Francisco County, California18 objects
- Great Lakes, United States17 objects
- Northern Great Lakes, United States15 objects
- Northern Plains, Great Plains, North America14 objects
- Northeastern United States12 objects
- Southwestern United States12 objects
- San Carlos, San Mateo County, California6 objects
- San Mateo County, California6 objects
- Arizona5 objects
- Kentucky5 objects
- New York state5 objects
- Northwestern United States4 objects
- Ohio4 objects