Region
United States
38
California
3
Illinois
2
Iraq
2
Missouri
2
New England
2
New York (State)
2
Oklahoma
2
Pennsylvania
2
Tennessee
2
Alabama
1
Alaska
1
Albuquerque Region
1
Arkansas
1
Baltimore Region
1
Bosnia and Herzegovina
1
Chicago Region
1
Columbia River Watershed
1
Florida
1
Georgia
1
Huntington Region
1
Idaho
1
Jacksonville Region
1
Kansas City Region
1
Kentucky
1
Little Rock Region
1
Los Angeles Region
1
Louisiana
1
Louisville Region
1
Maryland
1
Memphis Region
1
Minnesota
1
Mississippi
1
Mississippi River Valley
1
Mobile Region
1
Nashville Region
1
Nebraska
1
New Mexico
1
New Orleans Region
1
New York Region
1
North Carolina
1
Northwest, Pacific
1
Omaha Region
1
Philadelphia Region
1
Pittsburgh Region
1
Rock Island Region
1
Sacramento Region
1
Saint Louis Region
1
Saint Paul Region
1
San Francisco Bay Area
1
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