Region
Africa
1
America
1
Astoria (Or.)
1
Bent's Fort (Colo.)
1
Bozeman Trail
1
Brattleboro (Vt.)
1
Buffalo (N.Y.)
1
Butterfield Overland Trail
1
California
25
California National Historic Trail
3
Canada
6
Canadian Northwest
1
Central America
2
Chicago (Ill.)
1
Chihuahua (Mexico : State)
2
Cody Region
1
Cody Region (Wyo.)
1
Colorado
2
Colorado River (Colo.-Mexico)
3
Columbia River
16
Deserts
1
Duluth
1
Duluth (Minn.)
1
Elwha River Valley (Wash.)
1
England
4
Europe
2
Frontier and pioneer life
1
Germany
1
Glarus (Switzerland : Canton)
1
Grand Canyon (Ariz.)
1
Great Basin
1
Great Plains
5
Great Salt Lake
1
Great Salt Lake (Utah)
1
Hawaii
4
Highland (Ill.)
1
Idaho
2
Illinois
1
Iowa
2
Kansas
1
Knoxville Region (Tenn.)
1
Lewis and Clark National Historic Trail
1
Mexico
6
Michigan
1
Middle East
1
Minnesota
2
Mississippi River
5
Mississippi River Valley
6
Missouri River
16
Missouri River Valley
2
more ...