Last gasp of the Schuylkill Interceptor, December 20, 1956
Schuylkill River from below the South Street Bridge, 1873
You would not have wanted to drink it: Philadelphia’s water supply in 1884
Plan of Philadelphia, John Hills, 1796
Queen Lane Pumping Station, proposed design
Early photographs of Fairmount and vicinity, 1848
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
Down Under, Part 2: Beaver Creek as it appears today
Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871
