Plan of Pine Street Sewer, 1830
PWD Drinking Water Treatment diagram
“Speeding the Parting Guest,” Feb. 25, 1909
Typhoid bacteria diagram, 1905
Mill Creek Sewer under construction, 1883
“A Decidedly Mixed Drink,” April 6, 1899
Bridge Street Draw, Cofferdam, ca. 1896
Pennsylvania Hospital in Pine Street
PWD water tech at the Philly Home Show, 1960 (detail)
Lab tech, water cleaning demo, Philly Home Show, 1960