Down Under, Part 2: Beaver Creek as it appears today
Plan and profile of proposed Delaware Seventh St. Sewer, 1850
Plan of Pine Street Sewer, 1830
Mill Creek Sewer under construction, 1883
Norman Lofton inspects sewer at Ditman and Sheffield, 1987
“Philadelphia Underground,” Jan. 29, 1961
Captain Sewer and Michael Nutter, 1998
30th Street Sewer
Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912
Allegheny Avenue Sewer at Pier 126, 1918