


Centre Square Water Works, Drawings of Intake Basin

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

Centre Square Water Works, Latrobe Plans, 1799

Pipeline being laid in Wissahickon Avenue

Fairmount and vicinity, 1839

Wooden Water Pipe, removed from Market Street, December 6, 1901

Centre Square Engine House, ca. 1807

Bethlehem Water Works, 2011

Torresdale Conduit work gang, 12/18/1906

Finished Upper Roxborough filters, 1903
