Mayors--Pennsylvania--Philadelphia 2 Philadelphia (Pa.)--Social problems 2 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 more ... High speed ground transportation 1 Municipal charters--Pennsylvania--Philadelphia 1 Municipal government--Pennsylvania--Philadelphia 1 Municipal officials and employees--Pennsylvania--Philadelphia 1 Pennsylvania. Governor’s Committee for Transportation 1 Philadelphia (Pa.)--City planning 1 Philadelphia (Pa.)--Civic improvement 1 Philadelphia (Pa.)--History--20th century 1 Philadelphia (Pa.)--Officials and employees 1 Philadelphia (Pa.)--Race relations--History--20th century 1 Philadelphia (Pa.)--Social conditions--20th century 1 Segregation in education--Law and legislation--United States--History 1 Social reformers--Pennsylvania--Philadelphia 1 Urban development 1 Urban policy--Pennsylvania--Philadelphia 1 Urban renewal--Pennsylvania--Philadelphia 1 less ...