![Philadelphia harbor and rivers chart with points of interest](https://waterhistoryphl.org/wp-content/uploads/1912_Delaware_Schuylkill_Port_AEL-scaled.jpg?w=300)
![Philadelphia harbor and rivers chart with points of interest](https://waterhistoryphl.org/wp-content/uploads/1912_Delaware_Schuylkill_Port_AEL-scaled.jpg?w=300)
![Black-and-white image of a brick sewer outlet that drains into a creek with trees and a hill behind it](https://waterhistoryphl.org/wp-content/uploads/thomas-run-sewer-outlet-at-cobbs-creek.jpg?w=300)
Thomas Run sewer outlet at Cobbs Creek
![Black-and-white image showing a man standing in a large concrete half-pipe](https://waterhistoryphl.org/wp-content/uploads/thomas-run-sewer-outlet-under-construction.jpg?w=300)
Thomas Run sewer outlet during construction
![Six people and dozens of sandbags performing a load test on a concrete pipe, 1914](https://waterhistoryphl.org/wp-content/uploads/Load-test-concrete-sewer-pipe-1914_20040920278.jpg?w=300)
Pipe Test, 1914
![1914 map showing the plan for the collection and treatment of sewage in Philadelphia.](https://waterhistoryphl.org/wp-content/uploads/1914-Plan-2004.058.0065-RESCAN-rev2-reduced.jpg?w=300)
Plan for the Collection, Treatment and Disposal of Sewage, 1914
![The Pennypack Sewage Treatment Works in 1914](https://waterhistoryphl.org/wp-content/uploads/DR_PennypackWorks1914rpt119.jpg?w=300)
Pennypack Sewage Treatment Works, 1914
![Devereaux Street Sewer on the cover of Philadelphia magazine, 1911](https://waterhistoryphl.org/wp-content/uploads/DR_June1911.jpg?w=300)
Historic resources from our archives - images, maps, documents, and more.