Hi Joan When I was in the States in 1974, I was shown a very impressive canal system in PA [now defunct] which MAY have been used in the 1870's to transport people to Pittsburgh. But you had better rely on more knowledgeable locals!! The system impressed me because they even had barges that could be taken to bits so that they could haul them over the mountain range, and then re-assemble them again at the other side, and put them back into the canal. Best of luck. Nick from NZ, trying to track down A L VOGEL 1846 [see my EM Fri, 03 Feb 2006].