In the files of the American Canal Society archives I came across this Canal Boat Construction Index from 1993. At that time, the society was actively promoting the building of “authentic” canal boats in places where parks had decided to add a boat ride to their historic canal.
It is a bit of a wonky document, basically a finders guide to places where canal boat details might be gleaned, where models resided, and who (at that time) was operating or building boats. If you happen to be looking for archive materials about boats, this might be of help. It even includes the lock sizes.
It is an 11-page pdf file.