Region
United States
Soviet Union
24
Washington (D.C.)
12
Vietnam
11
Southern States
10
Europe, Eastern
8
Kentucky
7
New York (State)
7
Cuba
6
Developing countries
6
Massachusetts
6
California
5
Europe
5
Illinois
5
Louisville
5
Southwest, New
5
Great Britain
4
Latin America
4
Texas
4
West Virginia
4
Chicago
3
Japan
3
Nicaragua
3
Oregon
3
Russia
3
Vermont
3
Westchester County
3
Westchester County (N.Y.)
3
États-Unis
3
Alabama
2
Alaska
2
Amchitka Island
2
Amchitka Island (Alaska)
2
Asia
2
Brazil
2
Bullitt County (Ky.)
2
Canada
2
Caribbean Area
2
Central America
2
Chicago (Ill.)
2
Chile
2
China
2
Florida
2
France
2
Hungary
2
Indiana
2
Iran
2
Maine
2
Maryland
2
Middle East
2
more ...