History 521 Social conditions 57 African Americans 44 Social life and customs 37 Politics and government 36 Social aspects 36 Intellectual life 33 more ... History and criticism 32 Manners and customs 30 Immigrants 28 Race relations 28 Ethnic relations 23 Jews 20 Economic conditions 18 Emigration and immigration 18 Histoire 18 Political aspects 15 City planning 14 Buildings 12 Buildings, structures, etc 12 Economic history 12 Theater 12 history 12 Civil rights 11 Indians of North America 10 Slavery 10 Architecture 9 In literature 9 Literature 9 Political activity 9 less ...