Region
United States
Canada
15
Great Britain
8
France
7
California
5
Europe
4
New Jersey
2
New York (State)
2
Poland
2
Alaska
1
Boston
1
China
1
Colorado
1
Colorado Springs
1
Detroit
1
Developing countries
1
Fort Wayne
1
Germany
1
Germany (West)
1
Golden Gate Bridge (San Francisco, Calif.)
1
Hiroshima-shi (Japan)
1
Houston
1
India
1
Indiana
1
Iraq
1
Italy
1
Japan
1
Latin America
1
Massachusetts
1
Mexico
1
Michigan
1
Nagasaki-shi (Japan)
1
Netherlands
1
Nevada National Security Site (Nev.)
1
North America
1
North Carolina
1
Oregon
1
Outer space
1
Pennsylvania
1
Philadelphia
1
Rome
1
Russia
1
Russia (Federation)
1
Saint Lawrence Island
1
San Francisco
1
San Francisco (Calif.)
1
Southeast Asia
1
Southern States
1
Soviet Union
1
Sweden
1
more ...