Name
Pittsburgh Aqueduct
Photo Date
0000-00-00
Photo Credit
Robert M. Vogel
Photo_Notes
Photograph of historic plan of cable machinery for the Pittsburgh Aqueduct. The aqueduct was designed by John A. Roebling and was completed in May of 1845.
http://www.clpgh.org/research/pittsburgh/patentees/roebling.html
http://www.clpgh.org/research/pittsburgh/patentees/roebling.html