Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871
Leverington Avenue Stormwater Sewer
Cobbs Creek: A Brief Historical Overview by Adam Levine
Petition of manufacturers along the Schuylkill River in Philadelphia for a new upstream water supply, 1868
Aramingo Canal, Then and Now
Dealing with the city’s wastes in the mid-19th century
Second Bank of Pennsylvania, South Second Street, Philadelphia
Half a Century of Clean Water
Second Street North from Market St. with Christ Church, Philadelphia
Philadelphia the Manufacturing and Industrial Capital map, 1906