 
		 
		 
		Centre Square Water Works, Latrobe Plans, 1799
 
		Fair Mount Water Works engine house, 1819
 
		PWD water tech at the Philly Home Show, 1960 (detail)
 
		State Street pipeline construction, 1904
 
		Belmont Filters construction, 1903
 
		Rudolph Hering
 
		Electric Pump Installations at Lardner’s Point Pumping Station
 
		Engine House, Belmont Works
 
		New Mill House at Fairmount
