Topics Technology & Engineering

Birch’s Views of Philadelphia, 1800

Black and white photo of a man wearing a hat and standing on a bridge with his arm on a post

Wood truss drawbridge, Orthodox Street over Frankford Creek, 1899 [Detail]

State Street pipeline construction

State Street pipeline construction, 1904

Stand Pipe of Philadelphia Water Works

Water Works Standpipe, 1853

View of Fairmount Water Works, ca. 1827

Two black-and-white photographs of pipeline construction on State Road. Depicted are a group of people, trees, buildings, a fire hydrant and a grid of boards over the pipes.

State Road triple pipeline construction, 1904

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

Torresdale Conduit work gang, 1906