Subject Region
United States
3
Oklahoma
2
Arizona
1
British Columbia
1
California
1
Devils Tower National Monument (Wyo.)
1
Great Plains
1
Idaho
1
Mount Shasta (Calif.)
1
North America
1
Pine Ridge Indian Reservation (S.D.)
1
Salt River Indian Reservation (Ariz.)
1
South Dakota
1
Southwestern States
1
Vancouver Island
1
Virginia
1
West (U.S.)
1
Wyoming
1