Region
United States
Soviet Union
6
Great Britain
2
Arches National Park
1
Arches National Park (Utah)
1
Berkeley
1
Boston
1
California
1
Charleston, S.C
1
Chicago
1
Chicago (Ill.)
1
China
1
Egypt
1
Greenwood
1
Greenwood (Miss.)
1
Hollywood (Calif.)
1
India
1
Massachusetts
1
Mexico
1
Michigan
1
Mississippi
1
New York (State)
1
North Dakota
1
Pennsylvania
1
Philippines
1
Utah
1
West (U.S.)
1