The Schuylkill Navigation: A Journey on the Historic Nineteenth Century Waterway
Annual reports and other documents relating to Philadelphia’s water supply system, 1796-1992
Down Under III: A walk in the Dobson’s Run Storm Relief Sewer, June 15, 2010
Requiem for a stream: A brief history of Dobson’s Run
Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871
Centre Square Water System
Plan of Pine Street Sewer, 1830
Mill Creek Sewer under construction, 1883
Fairmount Water Works, W.H. Bartlett, 1839
Centre Square Engine House, ca. 1807