Geography
United States
81 results
Texas
22 results
England
17 results
Cambridge
10 results
College Station
10 results
Canada
6 results
Great Britain
6 results
Soviet Union
2 results
United Kingdom
2 results
États-Unis
2 results
Baltimore
1 results
Chapel Hill
1 results
China
1 results
Foreign countries
1 results
Maryland
1 results
Massachusetts
1 results
Michigan
1 results
Middle Atlantic States
1 results
Minnesota
1 results
New York (State)
1 results
North Carolina
1 results
Oxford
1 results