Bridge Street Draw, April 19, 1896. [Detail of men]
Bridge Street Draw. General view of old draw, ca 1896
Preparation for War to Defend Commerce
The Water Works in Centre Square, Philadelphia
Color Diagram of Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia
30th Street Sewer
Oak Lane Reservoir pipeline, 1904
Upper Roxborough filter beds under construction, July 1902
Electric Pump Installations at Lardner’s Point Pumping Station
Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912
