 
		 
		 
		Wooden Water Pipe, removed from Market Street, December 6, 1901
 
		PWD water tech at the Philly Home Show, 1960 (detail)
 
		‘Gillette, All By Himself, Gets Fine New Idea On Germ Slaying’
 
		State Street pipeline construction, 1904
 
		Jar of raw sewage before treatment, 2000
 
		Swimmers at Pier 126, Delaware River, July 15, 1918
 
		Allegheny Avenue Sewer at Pier 126, 1918
