“A Decidedly Mixed Drink,” April 6, 1899
Effects of Expansion of Gas Bubbles in Enscher Sludge Shown in Right-Hand Cylinder
‘Gillette, All By Himself, Gets Fine New Idea On Germ Slaying’
State Street pipeline construction, 1904
Belmont Filters construction, 1903
Upper Roxborough filter beds under construction, July 1902
Rudolph Hering
Outhouse over the Schuylkill near Pottstown
McConnell Germ-Proof Filters ad
Standard Philadelphia (B) Hydrant