Region
United States
1,376
États-Unis
526
California
14
Washington (D.C.)
13
Canada
9
Californie
8
Alaska
7
Mexico
6
Europe
5
Massachusetts
5
New York (State)
5
Panama
5
Texas
5
Mexique
4
Canal Zone
3
Caribbean Area
3
Chicago
3
Developing countries
3
Foreign countries
3
Illinois
3
Japan
3
Mexico, Gulf of
3
Ontario
3
Africa
2
Amérique latine
2
Canal de Panamá (Panamá)
2
Caraïbes (Région)
2
Communist countries
2
Florida
2
Germany
2
Gulf of Mexico
2
Hawaii
2
Iraq
2
Japon
2
Laos
2
Latin America
2
Mexique, Golfe du
2
Michigan
2
Middle East
2
New Melones Dam site
2
Panama Canal
2
Panama Canal (Panama)
2
Pays socialistes
2
Pennsylvania
2
Porto Rico
2
Puerto Rico
2
Tracy
2
Afrique
1
Allemagne
1
American Samoa
1
more ...