Early visions of Philadelphia’s airport
Frankford Creek Watershed: A historical overview of the Philadelphia section
Frankford Creek Watershed Historical Timeline
Overbrook, as it was. A brief history of the Overbrook neighborhood of Philadelphia, focusing on changes in the natural landscape.
Cobbs Creek in the Days of the Old Powder Mill
Requiem for a stream: Still House Run in Manayunk
The Manayunk Expressway
Cobbs Creek: A Brief Historical Overview by Adam Levine
Manayunk and the Schuylkill Navigation
