PWD Drinking Water Treatment diagram
“Speeding the Parting Guest,” Feb. 25, 1909
Mill Creek Sewer under construction, 1883
“A Decidedly Mixed Drink,” April 6, 1899
Bill for Privy Cleaning, 1869
Pennsylvania Hospital in Pine Street
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’
Torresdale Conduit work gang, 12/18/1906