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 Water and Drainage History of Philadelphia: A seven-part course
Half a Century of Clean Water
Drain water from sludges obtained from sedimentation, septic and Emscher tanks
“Philadelphia Underground,” Jan. 29, 1961
Rudolph Hering
Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912
