Watersheds Delaware River Watershed

Old U. S. Navy Yard

Old U. S. Navy Yard

Color Diagram of Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia

Bird's eye view of Delaware River

Bird’s eye view of Delaware River and Philadelphia, about 1840

Laying the Main (2004.057.0074.007)

Commencement of laying the main on the East side of the River, 1871

Henry Disston & Sons, Keystone Saw, Tool, Steel and File Works, 1884 (2004.007.0005)

Henry Disston & Sons Keystone Saw Works

The Pennypack Sewage Treatment Works in 1914

Pennypack Sewage Treatment Works, 1914

Eleven men in a work gang plug leaks in a tunnel, the Torresdale Conduit

Torresdale Conduit work gang, 1906

Henry Disston's Keystone Saw Works was located along the Delaware riverfront in Tacony. The black-and-white lithograph shows the factory's many smokestacks emitting smoke into the atmosphere.

Keystone Saw Works