The Water and Drainage History of Philadelphia: A seven-part course
Thomas Run sewer outlet at Cobbs Creek
Outhouse over the Schuylkill near Pottstown
Baldwin Locomotive Works
Includes pollution caused by the direct dumping of factory or industrial wastes into rivers and streams, the dumping of industrial wastes and sewage through the city's sewer system, combined sewer overflows during wet weather, and polluted stormwater carried into streams by the city's stormwater drainage pipes.