Sources History 86 Islamic law 79 Islam 33 Hadith 31 Customs and practices 27 United States 20 Fatwas 17 Foreign relations 17 Interpretation and construction 17 Politics and government 16 World War, 1939-1945 10 Soviet Union 8 Causes 7 African Americans 6 Biography 6 Civil rights 6 Cold War 6 Fatwa 6 Speeches, addresses, etc., American 6 World politics 6 Civilization 5 Juvenile literature 5 Race relations 5 Campaigns 4 Correspondence 4 Europe 4 History, Military 4 Military history 4 Personal narratives 4