Watersheds Delaware River Watershed

Arch Street Ferry, Philadelphia

“Philadelphie,” Bird’s Eye View, 1855

Penn's Treaty with the Lenape

Penn’s Treaty with the Indians (Watson’s Annals)

Dock Creek and Blue Anchor Inn

Penn Landing at Blue Anchor, from Watson’s Annals

Swimmers at Pier 126, Delaware River July 15, 1918

Swimmers at Pier 126, Delaware River, July 15, 1918

Photo of Allegheny Avenue Sewer, Pier 126, Delaware River, July 15, 1918

Allegheny Avenue Sewer at Pier 126, 1918

Photo of a work crew constructing a sewer in Rock Run, Tacony Creek, Philadelphia

Sewer construction, Rock Run, 1922