Geographic Subject
United States
États-Unis
11
China
10
Great Britain
10
Soviet Union
10
Confederate States of America
5
Latin America
5
Nicaragua
5
France
4
Germany
4
Japan
4
Peru
4
Romania
4
Austria
3
Brazil
3
Caribbean Area
3
Czechoslovakia
3
Iran
3
Liberia
3
Maryland
3
Mexico
3
Panama
3
Pennsylvania
3
South Africa
3
Turkey
3
Alabama
2
Amérique centrale
2
Berlin (Germany)
2
Bolivia
2
Canada
2
Caribe, Area del
2
Central America
2
Colombia
2
Cuba
2
Egypt
2
Estados Unidos
2
Ethiopia
2
Germany (West)
2
Honduras
2
Lima (Peru)
2
Louisiana
2
Madagascar
2
Massachusetts
2
Mississippi River
2
Missouri
2
Philippines
2
Russia
2
Serbia
2
Spain
2
Tuskegee
2
more ...