Collection place
- XT Ranch, Eddy County, New Mexico3 objects
- Xalapa, Veracruz, Mexico1 objects
- Xalpatlahuac, Guerrero, Mexico2 objects
- Xi'an, Shanxi province, Northern China1 objects
- Xico, State of Mexico, Mexico1 objects
- Xinjiang Uyghur autonomous region, Northwest China45 objects
- Xizang autonomous region (Tibet), Tibetan Pleatau, China5 objects
- Xochicalco, Cuernavaca, Morelos, Mexico1 objects
- Xochimilco, Michoacán, Mexico5 objects
- Xochistlahuaca, Guerrero, Mexico7 objects