“Speeding the Parting Guest,” Feb. 25, 1909
“A Decidedly Mixed Drink,” April 6, 1899
Bacteria in Delaware River, Torresdale Filters, 1913
Belmont Filters construction, 1903
Finished Upper Roxborough filters, 1903
Upper Roxborough filter beds under construction, July 1902
A.C. Abbott, MD
McConnell Germ-Proof Filters ad
Water Before and After Roxborough