


Centre Square Water Works, Latrobe Plans, 1799

Dauphin and Sydenham car crash, Jan. 17, 1978

Thomas Run sewer outlet at Cobbs Creek

69th St. Sewer and Culvert across Lansdowne AVe.

Duplex Pumping Engine, Belmont Works

View from the Inclined Plane near Philadelphia, 1838

Fairmount Water Works, about 1860
