Region
United States --
25
United States
12
Soviet Union --
4
Soviet Union
3
United states --
3
Europe --
2
New York
2
New York (State) --
2
Canada
1
China --
1
Eurasia --
1
Europe
1
France
1
France --
1
Japan --
1
Pacific area --
1
Russia (Federation)
1
Russia (Federation) --
1
Southern States
1
Southern States --
1