Map of Philadelphia Harbor, Delaware and Schuylkill, 1912
Schuylkill River from below the South Street Bridge, 1873
Schuylkill River from below the South Street Bridge, 1873
Frankford Creek Watershed: A historical overview of the Philadelphia section
Report on channelization of Frankford Creek for flood control (1947)
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.
Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871
1882 Report from the Army Corps of Engineers on Navigation in Frankford Creek, Philadelphia
Leverington Avenue Stormwater Sewer
