History 220 Social conditions 127 African Americans 92 Race relations 88 Politics and government 72 Buildings, structures, etc 54 Architecture 32 more ... Intellectual life 30 Social life and customs 27 Social aspects 24 Civil rights 23 Economic conditions 20 History and criticism 19 Immigrants 18 American literature 17 Emigration and immigration 16 Ethnic relations 16 Political activity 15 Buildings 14 City planning 14 Political aspects 14 Migrations 13 Working class 13 Ethnic identity 12 Manners and customs 12 Women 12 Civil rights movements 11 Jews 11 Mexican Americans 11 Race identity 11 less ...