Sandy Run Watershed and the Holmesburg Water Works
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Philadelphia’s Sewer Problem
Sewer systems, City of Philadelphia, 1927 and 1929
Frankford Creek Watershed: A historical overview of the Philadelphia section
Frankford Creek Watershed Historical Timeline
Frankford Creek Watershed in the context of the development of Philadelphia’s sewers and sewage treatment system
Two Frankford Creek Bridges, 1896-1899