Birch’s Views of Philadelphia, 1800
The Discovery Center: The creative reuse of an abandoned city reservoir
Thomas Mill Covered Bridge over Wissahickon Creek (Picturesque America)
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Requiem for a stream: Adams Run in Oak Lane
Cobbs Creek: A Brief Historical Overview by Adam Levine
High Water: Flooding in Philadelphia
Fairmount Gardens with the Schuylkill Bridge, 1839