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Rivers & Creeks
Pennypack Creek
Map Lovers’ Monday: Philadelphia in 1897, with color added
Sandy Run Watershed and the Holmesburg Water Works
Lower Dublin Township, Philadelphia County, in 1848
Pennypack Park Map
Plans and maps of the Pennypack Creek Watershed in Philadelphia
Streams, islands, and ferries of early Philadelphia
Pennypack Sewage Treatment Works, 1914