Philadelphia Views--Street Scenes--19th century 5 Philadelphia views--Street scenes--20th century 4 Architecture--20th Century 1 Built environment--Pennsylvania--Philadelphia--20th century 1 Centennial Exhibition (1876 : Philadelphia, Pa.) 1 City Hall--Philadelphia--19th Century 1 Delaware River Bridge 1 more ... Girard College 1 Labor--20th Century 1 Philadelphia Views--19th century 1 Philadelphia--Streets--Chestnut St 1 Photography--Philadelphia Street Scenes--19th century 1 Poverty--20th century 1 Recreation--Bicycling 1 River engineering--Pennsylvania--Philadelphia 1 Sewerage--Pennsylvania--Philadelphia 1 Subways--Philadelphia 1 Taverns (Inns)--Philadelphia--History 1 less ...