Map Lovers’ Monday: Schuylkill River from Wissahickon Creek to Norristown, 1913
Map of Philadelphia Harbor, Delaware and Schuylkill, 1912
Schuylkill River from below the South Street Bridge, 1873
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
Two Frankford Creek Bridges, 1896-1899
1882 Report from the Army Corps of Engineers on Navigation in Frankford Creek, Philadelphia
