


Wissahickon Pipe Aqueduct, Roxborough to Mt. Airy, 1868

Plan of Philadelphia, John Hills, 1796

Wingohocking Sewer across Penn St.

Diagram from sewage treatment plan for Philadelphia, 1912

Queen Lane Pumping Station, proposed design

Listening for leaks

Southwest Sewage Treatment Plant under construction, 1949

Photos from the Philadelphia Anglers’ Club

Two Frankford Creek Bridges, 1896-1899

Centre Square Water Works, Drawings of Intake Basin
