Places Pennsylvania

Birch’s Views of Philadelphia, 1800

Photograph of Roberts Mill on Wingohocking Creek in Germantown, built in the late 17th century. (Photograph by J. C. Browne, 1871. Castner Collection/Free Library of Philadelphia)

Roberts Mill, Wingohocking Creek, 1871

Aqueduct carrying sewer over Creishem Creek, in the Wissahickon Valley, 1892

Cresheim Aqueduct

Wire Bridge at Fairmount

Schuylkill Navigation lock at Fairmount (Picturesque America)

Scenes on the Wissahickon

Scenes on the Wissahickon Creek (Picturesque America)

Wissahickon near Paper Mill Bridge, 1873

Wissahickon Creek near the Paper Mill Bridge (Picturesque America)

Drive Along the Wissahickon

Drive along the Wissahickon Creek Vallley (Picturesque America)

Diagram from sewage treatment plan for Philadelphia, 1912

Centre Square Water Works, Frederick Graff, Sr. Plans, 1799

Dauphin and Sydenham car crash, Jan. 17, 1978

Wheeled robotic sewer crawler in sewer pipe

Still photo from a video sewer inspection, 2000

Pen and ink drawing of the proposed Delaware Seventh Street Sewer

Plan and profile of proposed Delaware Seventh St. Sewer, 1850