Collection place
- La Playa near Altar, Sonora, Mexico2 objects
- Lake Isabella Reservoir, Kern County, California2 objects
- Madhya Pradesh, India2 objects
- Manteca Canyon area, Tecate municipality, Baja California2 objects
- Manteca Canyon, Tecate municipality, Baja California2 objects
- Mastodon State Historic Site, Jefferson County, Missouri2 objects
- Mendocino County, California2 objects
- Middle East2 objects
- Miramar Beach, Guaymas, Sonora2 objects
- NV-Wa-X1, Washoe County, Nevada2 objects
- Narmada valley, Madhya Pradesh, India2 objects
- Northeastern United States2 objects
- Northern Cape Province, Republic of South Africa2 objects
- Olduvai Gorge, Tanzania2 objects
- Pumice Stone Well, Siskiyou County, California2 objects
- San Benito County, California2 objects
- Santa Cruz County, California2 objects
- Saudi Arabia2 objects
- Shasta County, California2 objects
- Site 3 (Riddell/Menzel), North of Miramar Beach, Guaymas, Sonora2 objects