Region
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Netherlands
1
New York
3
New York (State)
3
Nigeria
1
North America
3
North Dakota
1
Pennsylvania
2
Philadelphia
1
Poland
1
Psychology
1
Riceville
2
Rome
3
Russia
2
San Francisco
1
Scotland
2
Solar system
4
South Africa
1
South America
1
Soviet Union
4
Spain
1
Study and teaching
1
Study and teaching (Elementary)
3
Tennessee
5
Texas
4
Turkey
1
USA
1
United States
655
United states
1
Utah
1
Wales
1
Washington (State)
1
West (U.S.)
3
Whitwell
2
Whitwell (Tenn.)
2
Wounded Knee (S.D.)
1
Wounded Knee Memorial and Historic Site (S.D.)
1
États-Unis
2