 
		 
		 
		Cresheim Aqueduct
 
		Pipeline being laid in Wissahickon Avenue
 
		Typhoid bacteria diagram, 1905
 
		Wooden Water Pipe, removed from Market Street, December 6, 1901
 
		Main Pumping Stations for Philadelphia Drinking Water
Philadelphia the Manufacturing and Industrial Capital map, 1906
 
		Torresdale Conduit work gang, 12/18/1906
 
		Bureau of Water, Cumberland, west of 13th Street, pipe line, 1907
 
		Oak Lane Reservoir pipeline, 1904
 
		State Street pipeline construction, 1904
