Roebling's Delaware Aqueduct within the Upper Delaware Scenic and Recreational River

http://www.nps.gov/upde/historyculture/roeblingbridge.htm

The National Park Service site provides information on the history and restoration of the country's oldest remaining wire-suspension bridge, the Delaware Aqueduct or Roebling Bridge. Included is a section on its builder, John A. Roebling, with a brief biography and helpful timeline of key events in his life.

Referenced in:
Roebling and Suspension Bridges: A Thread of Steel