Region
Northwestern States
43
United States
15
Minnesota
13
Mississippi River
11
Mississippi River Valley
7
Northwestern states
6
Northwest, Canadian
4
Missouri River
3
North America
3
Northwest, Old
3
États-Unis
2
États-Unis (Nord-Ouest)
2
Missouri
2
North-western states
2
Oregon
2
West (U.S.)
2
Amérique du Nord
1
Astoria (Or.)
1
Canada
1
ESTADOS UNIDOS
1
Great Plains
1
Mississippi (Fleuve)
1
Mississippi, Vallée du
1
Montana
1
North Dakota
1
North-western States
1
Ohio
1
Ohio River Valley
1
RIO MISSISSIPPI (ESTADOS UNIDOS : VALLE)
1
Red River of the North
1
South Dakota
1
Southwest, Old
1
The West
1
Washington (D.C.)
1