Region
Alabama
1
Allemagne
1
Arkansas
1
États-Unis
2
États-Unis (Ouest)
1
Germany
1
Hawaii
1
Kansas
1
Kentucky
1
Louisiana
2
Minnesota
1
Mississippi River Valley
1
Missouri
5
Missouri River
5
Missouri River Valley
7
Missouri Valley
4
Missouri, Vallée du
1
Nebraska
1
Nordamerika
1
North America
3
North Dakota
1
Northwestern States
3
Ohio
1
South Dakota
1
USA
1
United States
2
West (U.S.)
5
West United States
3
Wisconsin
1