Schuylkill River at Rockland Landing (Picturesque America)
Down Under III: A walk in the Dobson’s Run Storm Relief Sewer, June 15, 2010
Down Under, Part 2: Beaver Creek as it appears today
Leverington Avenue Stormwater Sewer
Two reports on the state of the Schuylkill River, 1867
Streams, islands, and ferries of early Philadelphia