Map of Philadelphia Harbor, Delaware and Schuylkill, 1912
Old U. S. Navy Yard
Schuylkill River from below the South Street Bridge, 1873
Coal Depot, Richmond, on the Delaware (Picturesque America)
Chestnut Street Bridge, on the Schuylkill River (Picturesque America)
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
Frankford Creek Watershed
