I mentioned in my previous post that I had visited some ruined locks on Chatham Run. The run is the namesake of Colonel John Chatham who came to Pennsylvania from England in 1769. He was a military man and led the militia whose charge it was to protect settlers in the area during the Revolution. After the war Chatham built a mill as part of his farming operation. The Colonel’s property was sold in 1818 and the mill was restored shortly thereafter; it still exists and I posted its image some time ago. After the event described in my previous post, the current owner of the Colonel’s home and I engaged in conversation about ongoing restoration efforts. At one point he asked about my interest in the locks. Our discussion then took a turn and we never came back to the issue of the stone work. I can imagine that it would have been an easy matter to move materials between the river and the mill, which are separated by a distance of about a quarter-mile, via a communicating waterway created by the lock. Unfortunately no vestige of the water gates remain to know for sure how they may have been designed. I thought however that the gracefully curved stone walls, now overgrown, made for a nice image.