Time Periods 1850-1900

Fairmount Park topographical map, showing East Park Reservoir, 1872

Thomas Mill Covered Bridge on the Wissahickon

Thomas Mill Covered Bridge over Wissahickon Creek (Picturesque America)

Wingohocking Sewer across Penn St.

Wingohocking Sewer across Penn St.

Black-and-white image of workers in a pit with a sewer opening behind them and text

Frankford Creek: Sad History of an Urban Stream title page

Duplex Pumping Engine, Belmont Works

Duplex Pumping Engine, Belmont Works