Region
West (U.S.)
United States
38
West United States
25
États-Unis (Ouest)
17
États-Unis
8
Columbia River
7
Missouri River
7
North America
7
Mississippi River Valley
5
The West
5
Utah
5
Nordamerika
4
Pacific States
4
Amérique du Nord
3
Mississippi River
3
Northwest, Pacific
3
Rocky Mountains
3
USA
3
America
2
California
2
Columbia (Fleuve)
2
États-Unis (Nouveau Sud-Ouest)
2
Great Salt Lake
2
Great Salt Lake (Utah)
2
Indianer
2
Mississippi, Vallée du
2
Missouri (Rivière)
2
New Mexico
2
New Southwest
2
Northwest, Old
2
Northwestern States
2
Ohio River
2
Oregon Territory
2
Southwest, New
2
1848-1860
1
1860-1890
1
1890-1945
1
Allemagne
1
Amérique
1
Colorado
1
Colorado (Col.-Mexique : Fleuve)
1
Colorado River
1
Colorado River (Colo.-Mexico)
1
Colorado River Valley
1
East (U.S.)
1
Engineer Cantonment (Neb.)
1
Europe
1
États-Unis (ouest)
1
Far West
1
Florida
1
more ...