The Three Rivers Canal
It was my privilege recently to give a talk to a combined meeting of the Pennsylvania Canal Society, the Ohio Canal Society, and the Northern Ohio Chapter of the Society of Industrial Archaeology. The occasion was their annual Fall Tour, which was located in the Pittsburgh area this year. I chose for my subject the history of the twenty-three sets of dams and locks that make up the Pittsburgh District of the United States Army Corps of Engineers, with particular emphasis on the role of the Dravo Corporation in their development. I chose to parse the subject geographically (Monongahela…