Last gasp of the Schuylkill Interceptor, December 20, 1956
The Water Supply Problem of Philadelphia, 1899
Effects of Expansion of Gas Bubbles in Enscher Sludge Shown in Right-Hand Cylinder
Drain water from sludges obtained from sedimentation, septic and Emscher tanks
Outhouse over the Schuylkill near Pottstown
Pegg’s Run, Northern Liberties (Watson’s Annals)
Swimmers at Pier 126, Delaware River, July 15, 1918