Subject Region
United States
88
New York (State)
23
California
22
New York
18
Great Britain
10
San Francisco
8
Washington (State)
7
Illinois
6
Michigan
6
Pennsylvania
6
Seattle
6
Massachusetts
5
San Francisco Bay Area
5
Canada
4
Chicago
4
India
4
Louisiana
4
Philadelphia
4
Spain
4
California, Southern
3
China
3
England
3
Europe
3
France
3
Iowa
3
Iowa City
3
Iowa City (Iowa)
3
Italy
3
Johnson County (Iowa)
3
Mexico
3
Minnesota
3
New England
3
New Jersey
3
Rome
3
Texas
3
Australia
2
Boston
2
Cambridge
2
Cambridge (Mass.)
2
Chicago (Ill.)
2
Colorado
2
Cook County (Ill.)
2
Cuba
2
Dallas
2
Espana
2
Florida
2
Germany
2
Humboldt County
2
Middlesex County (Mass.)
2
Minneapolis
2
more ...