History 326 African Americans 279 Periodicals 237 Indians of North America 173 Politics and government 131 Antiquities 101 Civilization 96 Máis ... Foreign relations 65 Noirs américains 65 Histoire 56 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 World politics 23 Diplomatic relations 22 Economic conditions 22 International relations 22 Civilisation 21 menos ...