History 1,922 African Americans 505 Emigration and immigration 178 Histoire 174 Politics and government 140 Sources 119 Slavery 112 more ... Social conditions 112 Race relations 104 Social life and customs 97 Periodicals 94 German Americans 89 Bibliography 74 Irish Americans 70 Polish Americans 65 Italian Americans 63 Immigrants 54 Civil rights 53 Indians of North America 47 Historiography 46 History and criticism 45 Swedish Americans 42 Chinese Americans 41 Study and teaching 40 Societies, etc 38 Civilization 35 Enslaved persons 35 Irish 34 Biography 33 Japanese Americans 33 Italians 31 Women 30 Cooking, American 29 Economic conditions 29 Germans 28 Antislavery movements 27 Social aspects 26 Asian Americans 25 Minorities 25 Norwegian Americans 25 less ...