Subject
Trails
Outdoor recreation
12
Hiking
6
Public lands Recreational use
5
Camp sites, facilities, etc
3
Grand Canyon National Park (Ariz.)
3
Alpine Loop National Back Country Byway (Colo.)
2
Automobile driving
2
Automobiles Recreational use
2
Datil Well Campground (N.M.)
2
Forest roads
2
Gifford Pinchot National Forest (Wash.)
2
Historic sites
2
National parks and reserves
2
Rocky Mountain Arsenal National Wildlife Refuge (Colo.)
2
Scenic byways
2
Wildlife watching
2
Appalachian Trail
1
Arches National Park (Utah)
1
Boats and boating
1
Carson National Forest (N.M.)
1
Castle Peak Region (Eagle County, Colo.)
1
Catron County (N.M.)
1
Cliff-dwellings
1
Deserts
1
Ecology
1
Green River (Utah)
1
High Uintas Wilderness (Utah)
1
Imperial County (Calif.)
1
King Range National Conservation Area (Calif.)
1
Latir Peak Wilderness (N.M.)
1
Lava flows
1
McInnis Canyons National Conservation Area (Colo. and Utah)
1
Motor vehicles
1
Natchez Trace National Scenic Trail
1
Nature observation
1
Off-road vehicle trails
1
Recreation areas
1
Salado culture
1
Santa Fe National Historic Trail
1
Tonto Basin (Ariz.) History
1
Tonto National Monument (Ariz.)
1
Valley of Fires Recreation Area (N.M.)
1
Wheeler Peak Wilderness (N.M.)
1