Bridge Street Draw, Cofferdam, ca. 1896
PWD water tech at the Philly Home Show, 1960 (detail)
Lab tech, water cleaning demo, Philly Home Show, 1960
‘Gillette, All By Himself, Gets Fine New Idea On Germ Slaying’
Immigrant family, ca. 1900, nurse in black
Jar of raw sewage before treatment, 2000
Northeast Sewage Plant opening, 1951
Allegheny Avenue Sewer at Pier 126, 1918
Privy Regulations