 
		 
		 
		Outline Map of the County and City of Philadelphia and Vicinity, 1883
 
		Centennial Exhibition situation plan, 1876
 
		30th Street Sewer
 
		69th St. Sewer and Culvert across Lansdowne AVe.
 
		Outhouse over the Schuylkill near Pottstown
 
		Duplex Pumping Engine, Belmont Works
 
		Engine House of the Belmont Works
 
		Fairmount Water Works, about 1860
 
		Engine House, Belmont Works
 
		Diagram showing the daily pumpage for the year 1877
