Social conditions 139 History 44 African Americans 33 Economic conditions 20 Race relations 13 Puerto Ricans 12 Housing 10 more ... Politics and government 8 Ethnic groups 7 Italian Americans 7 Periodicals 7 Social life and customs 7 City planning 6 Histoire 6 Minorities 6 Public welfare 6 Conditions sociales 5 Emigration and immigration 5 Ethnic relations 5 Immigrants 5 Philadelphia (Pa.) 5 Philadelphia (Pa.)--Social conditions--20th century 5 Social service 5 Citizen participation 4 Employment 4 German Americans 4 Household employees 4 Jews 4 Population 4 Urban renewal 4 African American women 3 Asian Americans 3 Civil rights 3 Community life 3 Ethnic identity 3 Government publicity 3 Noirs américains 3 Philadelphia (Pa.)--History--20th century 3 Philadelphia (Pa.)--Officials and employees 3 Public housing 3 less ...