Region
Wyoming
6
Campbell County
3
Montana
3
Johnson County
2
Big Horn County
1
Birney quadrangle
1
Buffalo quadrangle
1
Carter County
1
Carter County (Mont.)
1
Converse County
1
Crook County
1
Douglas quadrangle
1
Kaycee quadrangle
1
Platte County
1
Powder River County
1
Recluse quadrangle
1
Rosebud County
1
Sheridan quadrangle
1
West (U.S.)
1