Social conditions 127 History 40 African Americans 32 Economic conditions 20 Race relations 12 Housing 10 Puerto Ricans 10 more ... Ethnic groups 7 Periodicals 7 Politics and government 7 Social life and customs 7 City planning 6 Italian Americans 6 Minorities 6 Emigration and immigration 5 Ethnic relations 5 Immigrants 5 Philadelphia (Pa.) 5 Philadelphia (Pa.)--Social conditions--20th century 5 Public welfare 5 Conditions sociales 4 Employment 4 German Americans 4 Histoire 4 Household employees 4 Jews 4 Population 4 Social service 4 African American women 3 Asian Americans 3 Citizen participation 3 Civil rights 3 Community life 3 Ethnic identity 3 Philadelphia (Pa.)--History--20th century 3 Philadelphia (Pa.)--Officials and employees 3 Public housing 3 Social aspects 3 Social classes 3 Upper class 3 less ...