Creek to Sewer: Water History Video 1
High Water: An Informal History of Flooding in Philadelphia
Old U. S. Navy Yard
Schuylkill River Hydrographical Survey 1861-66 by H. P. M. Birkinbine
Duplex Pumping Engine, Belmont Works
Bird’s eye view of Delaware River and Philadelphia, about 1840
View from the Inclined Plane near Philadelphia, 1838