Neighborhoods All of Philadelphia

Pumping stations after Philadelphia's incorporation, 1854

Main Pumping Stations for Philadelphia Drinking Water

Black-and-white image of a graph with several captions

Diagram Showing Rate Between Bulk of Wet Sludge and Its Percentage Moisture

Map of Philadelphia showing Population in year 1920

Map of Philadelphia showing Population in year 1920

1914 map showing the plan for the collection and treatment of sewage in Philadelphia.

Plan for the Collection, Treatment and Disposal of Sewage, 1914