The Waffle: Water History Video 6
Map Lovers’ Monday: Philadelphia Topography
Map Lovers’ Monday: Topography of Philadelphia from 1863
Sandy Run Watershed and the Holmesburg Water Works
Roberts Mill, Wingohocking Creek, 1871
Schuylkill River at Rockland Landing (Picturesque America)
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Wingohocking Sewer across Penn St.
History of Belfield (1934)
Frankford Creek Watershed: A historical overview of the Philadelphia section