 
		 
		The Centre Square Works, 1801
 
		State of the Schuylkill River in 1876: Sewage pollution and possible remedies
 
		Fairmount Water Works, W.H. Bartlett, 1839
 
		Fairmount and vicinity, 1839
 
		Isometrical View of Fairmount Water Works, 1843
 
		Centre Square Engine House, ca. 1807
 
		Outhouse over the Schuylkill near Pottstown
 
		Northern Liberties and Spring Garden Water Works
 
		Electric Pump Installations at Lardner’s Point Pumping Station
 
		Fairmount Water Works, about 1860
