Region
Arizona
2
Coconino County
2
Grand Canyon
2
Mohave County
2
South Carolina
2
Big Bend National Park
1
Big Bend National Park (Tex.)
1
Charleston
1
Cherokee County
1
Chesapeake and Ohio Canal National Historical Park
1
Cleveland County
1
Colorado
1
Colorado National Monument
1
Colorado National Monument (Colo.)
1
Gaston County
1
Grand Canyon (Ariz.)
1
Grand Canyon National Park
1
Grand Canyon National Park (Ariz.)
1
North Carolina
1
Texas
1
United States
1
Yellowstone National Park
1
York County
1