Region
Alaska
2
Albania
1
America
2
Argentina
1
Arkansas
1
Austin (Tex.)
1
Austria
1
Belgium
1
Chicama River Valley
1
Chicama River Valley (Peru)
1
China
4
Denmark
1
England
2
Europe
2
France
2
Germany
1
Great Britain
4
Greece
1
Huaca Prieta Site (Peru)
1
Iran
2
Italy
2
Japan
1
Korea
1
Latin America
3
Louisiana
1
Manchuria (China)
1
Mediterranean Region
1
Mexican-American Border Region
1
Mexico
5
Middle East
2
Netherlands
1
New Orleans
1
New Orleans (La.)
1
Norway
1
Paris
1
Peru
1
Philadelphia (Pa.)
1
Southern States
2
Southwestern States
1
Spain
1
Texas
1
Tibet Autonomous Region
1
Tibet Autonomous Region (China)
1
United States
19
Washington (D.C.)
2
West (U.S.)
1
Wyoming
1
Yemen (Republic)
1
Yemen, North
1
Yemen, South
1