The Water Works in Centre Square, Philadelphia
Centennial Exhibition situation plan, 1876
PWD water tech at the Philly Home Show, 1960 (detail)
Oak Lane Reservoir pipeline, 1904
Upper Roxborough filter beds under construction, July 1902
Bureau of Water Spring Garden Testing Station, 1901
Electric Pump Installations at Lardner’s Point Pumping Station
Philadelphia Water Department Fire Hydrant
Diagram showing the daily pumpage for the year 1877
Pegg’s Run, Northern Liberties (Watson’s Annals)
