Collection place
- North America40 objects
- The Americas40 objects
- United States29 objects
- California22 objects
- Northern California15 objects
- Northwestern California14 objects
- Mexico11 objects
- Northern Mexico11 objects
- Northwest Mexico11 objects
- Sonora, Mexico10 objects
- Colonia Lerdo (ghost town), San Luis Rio Colorado, Sonora6 objects
- San Luis Río Colorado Municipality, Sonora, Mexico6 objects
- Southern California5 objects
- Navojoa Municipality, Sonora, Mexico4 objects
- Southwestern United States4 objects
- Northwestern United States3 objects
- Riverside County, California3 objects
- Coachella Valley, Riverside County, California2 objects
- Colorado Desert, Riverside County, California2 objects
- Africa1 objects