Transportation--Pennsylvania--20th century 4 Local transit--Pennsylvania--Philadelphia 3 Philadelphia Rapid Transit Company 3 Transportation--Images 3 City planning--Pennsylvania--Philadelphia 2 Commerce--Freight Transportation 2 Consumer activism--20th century 2 more ... Lawyers--Pennsylvania--Philadelphia--20th century 2 Local transit--Economic aspects--Pennsylvania--Philadelphia 2 Philadelphia (Pa.)--City planning 2 Philadelphia Transportation Company 2 Public transportation 2 Railroads--Management 2 Transportation 2 Transportation--Passenger traffic--England--18th century 2 Transportation--Pennsylvania--19th century 2 Transportation--Railroad--Descriptions--19th century 2 Transportation--Stagecoach--18th century 2 Transportation--Stagecoach--Accounts--19th century 2 Transportation--Steamboat--19th century 2 United States--History--Civil War, 1861-1865--Transportation 2 Urban policy--Pennsylvania--Philadelphia 2 Urban renewal--Pennsylvania--Philadelphia 2 World War, 1914-1918--Transportation 2 Advertising, Outdoor--United States--History--20th century 1 Advocacy organizations--Philadelphia--20th century 1 Affirmative action programs--Government policy--United States--History--20th century 1 Avenue of the Arts (Philadelphia, Pa.) 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 California--Description and travel--19th Century 1 California--Gold Rush--1849 1 Central business districts--Pennsylvania--Philadelphia 1 Charities--Pennsylvania--Philadelphia 1 City planning and development--Pennsylvania--Philadelphia--20th century 1 City planning--Pennsylvania--Philadelphia--20th century 1 Coaching--Maine--19th century 1 College trustees--United States 1 less ...