Subject
Express highways
Motor vehicles Recreational use
12
Trails
Forest roads
9
Roads
9
Outdoor recreation
8
Klamath National Forest (Calif. and Or.)
5
Wilderness areas
5
Humboldt National Forest (Nev.)
3
Toiyabe National Forest (Nev. and Calif.)
3
Camp sites, facilities, etc
2
Camping
2
Trail bike trails
2
Automobile driving
1
Caribou-Targhee National Forest
1
Gila National Forest (N.M.)
1
Nantahala National Forest (N.C.)
1
Off-road vehicle trails
1
Roosevelt National Forest (Colo.)
1
Snowmobile trails
1
Snowmobiling
1
Spring Mountains National Recreation Area (Nev.)
1
Winter sports
1