Middle class History 35 Social conditions 25 Politics and government 15 Economic conditions 14 Political activity 8 Working class 8 Social life and customs 5 Case studies 4 Businessmen 3 Families 3 Fiction 3 African Americans 2 Biography 2 Capitalism 2 Civilization, Modern 2 Clerks 2 Corporations 2 Cost and standard of living 2 Democracy 2 Industrial relations 2 Intellectual life 2 Men 2 Political participation 2 Race relations 2 Social mobility 2 Suburban life 2 Success 2 Achievement motivation 1 African American college graduates 1