Sources History 760 Politics and government 132 Foreign relations 108 African Americans 78 Indians of North America 59 Slavery 37 more ... Civilization 34 Correspondence 32 Civil rights 29 Government relations 26 Presidents 24 Race relations 24 African-Americans 21 History, Military 19 Slaves 19 Biography 18 Discovery and exploration 18 Histoire 18 Colonies 16 Social conditions 16 Personal narratives 15 Social life and customs 15 Archives 14 Watergate Affair, 1972-1974 14 Causes 13 Statesmen 13 Antislavery movements 12 Bibliography 12 Chronology 12 less ...