Region
Africa
1
Alabama
1
Alaska
1
Argentina
2
Canada
1
Chestnut Hill
2
Chile
1
China
2
Developing countries
2
East (U.S.)
1
England
2
France
2
Great Britain
3
Greenland
1
Honduras
1
Hot Springs (N.C.)
1
Ireland
2
Italy
1
Jamaica
4
Kingston
2
Latin America
1
Louisiana
1
Madison County (N.C.)
1
Maryland
5
Maryland, Southern
1
Massachusetts
2
Mexico
5
New England
1
New Orleans
1
New York
1
New York (State)
1
Newfoundland and Labrador
1
Nicaragua
1
North Carolina
1
Panama
1
Panama Canal (Panama)
1
Paraguay
1
Pennsylvania
2
Peru
1
Petersburg (Va.)
1
Poland
1
Prince George's County
1
Russia
1
Saint Inigoes Manor (Md.)
1
Saint Mary's County
1
Saint Mary's County (Md.)
1
Saudi Arabia
1
South Africa
1
Spain
2
Switzerland
1
more ...