Presidents Biography 20 United States 15 India 12 Politics and government 11 Scientists 9 Election 6 Speeches, addresses, etc 5 Abdul Kalam, A P J 4 Executive power 4 Government 4 Politics 4 Democracy 3 History 3 Legislative bodies 3 Mass media 3 United states 3 Clinton, Bill 2 Economic policy 2 Elections 2 Harry S Truman 2 Legislators 2 Memoirs 2 Political campaigns 2 Public institutions 2 Richard M Nixon 2 Wives 2 Women legislators 2 Abdul Kalam, A. P. J. (Avul Pakir Jainulabdeen), 1931-2015 1 Bill Clinton 1