Annual reports and other documents relating to Philadelphia’s water supply system, 1796-1992
Scenes on the Wissahickon Creek (Picturesque America)
Plan of Philadelphia, John Hills, 1796
Map Showing Districts, Boroughs & Townships Incorporated in Consolidation of Philadelphia in 1854
History of Belfield (1934)
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