Kensington Water Supply in 1883
Sewers, Pollution, and Public Health in 19th Century Philadelphia
Petition of manufacturers along the Schuylkill River in Philadelphia for a new upstream water supply, 1868
The Water Supply Problem of Philadelphia, 1899
The Water and Drainage History of Philadelphia: A seven-part course
Two reports on the state of the Schuylkill River, 1867
Half a Century of Clean Water
Volume of Sludge from 1,000,000 Gallons of Sewage
Diagram Showing Rate Between Bulk of Wet Sludge and Its Percentage Moisture
Sludge Drying Beds, Essen Nord, Germany