Region
California
3
North America
3
North Dakota
2
Alabama
1
Atlantic States
1
Elliott County
1
Idaho
1
Kentucky
1
Louisiana
1
Minnesota
1
Missouri
1
Mono Lake
1
New Mexico
1
New York (State)
1
Pacific Coast
1
Pennsylvania
1
Purgatory Canon
1
South Dakota
1
Texas
1
United States
1
Utah
1
Virginia
1
Washington (State)
1
Wyoming
1