Region
West (U.S.)
12
West United States
3
Columbia River
2
Missouri River
2
United States
2
Allemagne
1
États-Unis
1
États-Unis (Ouest)
1
Germany
1
Great Plains
1
Mexico
1
Mexique
1
Mississippi River Valley
1
Missouri River Valley
1
Missouri, Vallée du
1
New Mexico
1
Nordamerika
1
Northwest, Canadian
1
Northwest, Pacific
1
Nouveau-Mexique
1
Pacific States
1
Pennsylvania
1
Philadelphia
1
The West
1
Utah
1
West (U. S.)
1