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
Drain water from sludges obtained from sedimentation, septic and Emscher tanks
“Philadelphia Underground,” Jan. 29, 1961
State Street pipeline construction, 1904
Rudolph Hering
Standard Philadelphia (B) Hydrant
