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 Frederic Graff Jr.,Chief Engineer of the Philadelphia Water Department: Part 1, 1854-1857
From Creek To Sewer
Three reports on Philadelphia’s Sewage Treatment Project, 1911-1914
The Sad History of Frankford Creek
Plan of Pine Street Sewer, 1830
Mill Creek Sewer under construction, 1883
Emscher Tank Installation at Essen Nord, Germany
“Philadelphia Underground,” Jan. 29, 1961
