Frankford Creek Watershed: A historical overview of the Philadelphia section
Frankford Creek Watershed Historical Timeline
Drawing Dock Creek
Overbrook, as it was. A brief history of the Overbrook neighborhood of Philadelphia, focusing on changes in the natural landscape.
A Tour of Philadelphia’s Delaware River Waterfront in 1876
Cobbs Creek: A Brief Historical Overview by Adam Levine
The Schuylkill and Wissahickon banks in 1858
