 
		 
		 
		The Water and Drainage History of Philadelphia: A seven-part course
 
		“Philadelphia Underground,” Jan. 29, 1961
 
		State Street pipeline construction, 1904
 
		Electric Pump Installations at Lardner’s Point Pumping Station
 
		Standard Philadelphia (B) Hydrant
 
		Water Works Standpipe, 1853
View of Fairmount Water Works, ca. 1827
 
		Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
 
		State Road triple pipeline construction, 1904
 
		Torresdale Conduit work gang, 1906
