Region
United States
720
Europe, Eastern
16
Japan
15
Soviet Union
14
Hungary
11
Washington (D.C.)
9
Southern States
6
Illinois
5
Cuba
4
Europe
4
Great Britain
4
Latin America
4
Chicago
3
China
3
Russia
3
Texas
3
Vietnam
3
Asia
2
California
2
Caribbean Area
2
Chicago (Ill.)
2
Developing countries
2
Florida
2
Kentucky
2
Louisville
2
Massachusetts
2
New York (State)
2
Romania
2
Southwest, New
2
Vermont
2
Afghanistan
1
Africa
1
Africa, Southern
1
Alabama
1
Alaska
1
Amchitka Island
1
Amchitka Island (Alaska)
1
America
1
Balkan Peninsula
1
Brazil
1
Brooklyn (New York, N.Y.)
1
Bulgaria
1
Canada
1
Chile
1
Communist countries
1
Connecticut
1
Czechoslovakia
1
Europe, Central
1
France
1
Germany
1
more ...