Region
Africa, North
1
Appalachian Region
1
Argentina
1
Asia
1
Berlin
1
Berlin (Germany)
1
Boston
3
Boston (Mass.)
1
Buffalo (N.Y.)
1
Burlington
1
Burlington (Vt.)
1
China
3
Colombia
2
Connecticut
1
Delaware
1
Developing countries
2
England
2
Europe
2
France
2
Germany
1
Great Britain
5
Illinois
1
India
2
Ireland
1
Latin America
1
Massachusetts
9
Missouri
1
Morris Canal (N.J.)
1
New Jersey
2
New York
3
New York (N.Y.)
4
New York (State)
3
New York Metropolitan Area
2
Newark
1
Newport (R.I.)
1
Nova Scotia
1
Ontario
3
Passaic River (N.J.)
1
Paterson (N.J.)
1
Pennsylvania
4
Pennsyvlania
1
Philadelphia
3
Philadelphia (Pa.)
1
Poland
1
Québec (Province)
1
Rhode Island
1
Soviet Union
2
Spain
2
Tennessee
1
Thailand
1
more ...