‘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
Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912
Typical house drainage
