 
		 
		 
		Bridge Street Draw, construction of piers, ca. 1896
 
		Bridge Street Draw, Cofferdam, ca 1896 [Detail]
 
		Bridge Street Draw, looking north, ca. 1896
 
		Bridge Street Draw, southeast corner property, June 12, 1896
 
		Bridge Street Draw, Cofferdam, ca. 1896
 
		Bridge Street Draw. Southwest side of bridge. April 19, 1896. [Detail of people].
 
		Bridge Street Draw. Southwest side of bridge. April 19, 1896. [Detail].
 
		PWD water tech at the Philly Home Show, 1960 (detail)
 
		Lab tech, water cleaning demo, Philly Home Show, 1960
 
		State Street pipeline construction, 1904
