Other
United States
États-Unis
3
Soviet Union
3
Virginia
3
Boston (Mass.)
2
Maryland
2
Middle West
2
New York (N.Y.)
2
Pennsylvania
2
Philadelphia
2
Philadelphia (Pa.)
2
Allemagne
1
Appalachian Region
1
Boston
1
California
1
Düsseldorf
1
Düsseldorf (Germany)
1
Germany
1
Kentucky
1
Massachusetts
1
Moscow (Russia)
1
New York
1
New York (State)
1
Oakland (Calif.)
1
Palo Alto
1
Palo Alto (Calif.)
1
Pennsylvanie
1
Philadelphie
1
Reston
1
Reston (Va.)
1
Romania
1
Russia (Federation)
1
Southern States
1
Stanford
1
Stanford (Calif.)
1
Sweden
1
U.S. ]x History
1
URSS
1
Verenigde Staten
1
Women
1