Region
United States
8
Southwest, New
6
New Mexico
3
États-Unis
2
Great Plains
2
New York (State)
2
North America
2
America
1
American Bottom (Ill.)
1
Andes
1
Cahokia Mounds State Historic Park
1
Cahokia Mounds State Historic Park (Ill.)
1
California
1
Canada
1
Delaware
1
Etats-Unis
1
Europe
1
Grandes Plaines
1
Great Basin
1
Illinois
1
Kansas
1
Middle West
1
New Southwest
1
New York (State)$zNew York
1
Northeastern States
1
South America
1
Southern States
1
Southwest, Old
1
United States, Iowa
1
West (U.S.)
1