Sandy Run Watershed and the Holmesburg Water Works
Dripps map of Frankford and vicinity, 1849
Pennypack Park Map
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Map of Frankford Borough, 1845
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