United States 545 Massachusetts 24 Soviet Union 20 New York (State) 17 Boston 14 Great Britain 14 New York 12 China 10 Germany 10 Greece 10 Mexico 10 Southern States 10 États-Unis 10 Boston (Mass.) 8 Pennsylvania 8 Europe 7 Illinois 7 Latin America 7 North America 7 USA 7 Maine 6 South Africa 6 Chicago 5 India 5 New York (N.Y.) 5 Brazil 4 California 4 Caribbean Area 4 Central America 4 Developing countries 4 Merrimack River Valley (N.H. and Mass.) 4 Michigan 4 Middle East 4 New England 4 New Jersey 4 Ann Arbor 3 Chicago (Ill.) 3 Egypt 3 France 3 Jamaica 3 Memphis 3 Memphis (Tenn.) 3 North Carolina 3 Northern Ireland 3 Rome 3 Tennessee 3 Vietnam 3 Washington (D.C.) 3 Africa, West 2 Alabama 2 more ...