Sandy Run Watershed and the Holmesburg Water Works
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Wingohocking Sewer across Penn St.
Early visions of Philadelphia’s airport
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
Down Under III: A walk in the Dobson’s Run Storm Relief Sewer, June 15, 2010
Drawing Dock Creek
Down Under, Part 2: Beaver Creek as it appears today