History 328 African Americans 279 Periodicals 238 Indians of North America 173 Politics and government 131 Antiquities 101 Civilization 97 hơn ... Foreign relations 65 Noirs américains 65 Histoire 58 Social life and customs 50 Race relations 44 American literature 41 Archaeology 39 Relations 39 Slavery 37 Indians 34 Societies, etc 33 Black people 32 Social conditions 32 Education 28 Minorities 28 Study and teaching 28 Jews 25 History and criticism 23 Civilisation 22 Diplomatic relations 22 Economic conditions 22 International relations 22 World politics 22 ít hơn ...