Mayors 5 Politics and government 5 Mayors--Pennsylvania--Philadelphia 3 African American mayors 2 Conservatism 2 History 2 Municipal officials and employees--Pennsylvania--Philadelphia 2 more ... Philadelphia (Pa.)--History--20th century 2 Philadelphia (Pa.)--Officials and employees 2 Philadelphia (Pa.)--Social conditions--20th century 2 Philadelphia (Pa.)--Social problems 2 Populism 2 Working class 2 Campaign management--United States 1 City planning--Pennsylvania--Philadelphia 1 Education, Urban--Pennsylvania--Philadelphia 1 Education, Urban--United States--Administration 1 Education--United States--History--20th century 1 Education--United States--Management 1 Election 1 Elections--Pennsylvania--Philadelphia--History--20th century 1 Elections--United States--Planning 1 High speed ground transportation 1 Legislators 1 Municipal charters--Pennsylvania--Philadelphia 1 Municipal government--Pennsylvania--Philadelphia 1 Municipal government--Pennsylvania--Philadelphia--20th century 1 Municipal records--Philadelphia 1 Pennsylvania. Governor’s Committee for Transportation 1 Philadelphia (Pa.)--City government--20th century 1 Philadelphia (Pa.)--City planning 1 Philadelphia (Pa.)--Civic improvement 1 Philadelphia (Pa.)--Politics and government--20th century 1 Philadelphia (Pa.)--Race relations--History--20th century 1 Political campaigns--Law and legislation--United States 1 Political campaigns--Pennsylvania 1 Political candidates 1 Segregation in education--Law and legislation--United States--History 1 Social reformers--Pennsylvania--Philadelphia 1 Urban development 1 less ...