City planning--Pennsylvania--Philadelphia--20th century 5 City planning--Pennsylvania--Philadelphia 2 Lawyers--Pennsylvania--Philadelphia--20th century 2 Urban policy--Pennsylvania--Philadelphia 2 Advertising--Pennsylvania--Philadelphia--20th Century 1 Advocacy organizations--Philadelphia--20th century 1 Affirmative action programs--Government policy--United States--History--20th century 1 more ... Airports--Philadelphia 1 Architecture--20th Century 1 Avenue of the Arts (Philadelphia, Pa.) 1 Building Trade--20th Century 1 Built environment--Pennsylvania--Philadelphia--20th century 1 Business and manufacturing--Pennsylvania--Philadelphia--20th century 1 Business mergers and acquisitions--20th century 1 Business--History--Pennsylvania--Philadelphia--20th century 1 Central business districts--Pennsylvania--Philadelphia 1 City planning and development--Pennsylvania--Philadelphia--20th century 1 Consumer activism--20th century 1 Education, Urban--Pennsylvania--Philadelphia 1 Education, Urban--United States--Administration 1 Education--United States--History--20th century 1 Education--United States--Management 1 High speed ground transportation 1 Historic preservation--Pennsylvania--Philadelphia 1 Hog Island Philadelphia Airport Terminal 1 Housing--Pennsylvania--Philadelphia --20th century 1 Local transit--Economic aspects--Pennsylvania--Philadelphia 1 Mayors--Pennsylvania--Philadelphia 1 Municipal charters--Pennsylvania--Philadelphia 1 Municipal government--Pennsylvania--Philadelphia 1 Municipal officials and employees--Pennsylvania--Philadelphia 1 Museums--Pennsylvania--Philadelphia--20th century 1 Pennsylvania--Politics and government--20th century 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 Philadelphia (Pa.)--Social problems 1 less ...