Topics Technology & Engineering

View from the Inclined Plane, near Philadelphia, 1838

View from the Inclined Plane near Philadelphia, 1838

Sewage collection and disposal plan

Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912

New Mill House at Fairmount (2008.001.0046)

New Mill House at Fairmount

Tinted image of a single-arch bridge over a river with landscape in the distance

Lancaster/Schuylkill Bridge (Upper Ferry Bridge)

View of Fairmount Water Works, ca. 1827

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

Torresdale Conduit work gang, 1906