Region
Arizona
3
Grand Canyon National Park
3
Grand Canyon National Park (Ariz.)
3
New Mexico
3
Datil
2
Datil Well Campground (N.M.)
2
Michigan
2
Catron County (N.M.)
1
Dripping Springs Natural Area (N.M.)
1
Huron National Forest
1
Huron National Forest (Mich.)
1
Hyde Park (Dutchess County)
1
Inyo National Forest (Calif. and Nev.)
1
Manistee National Forest
1
Manistee National Forest (Mich.)
1
New York (State)
1
Organ Mountains Wilderness
1