Jack Haugh was a very well respected American gunmaker. I believe he specialized in early American and English style firearms. If you do a search of him you should be able to find some pertinent information on him. You don't see his work come up for sale often. Some other forum sites have already been suggested which would be a good place to start for additional information. He was a master gunmaker and craftsman who performed all the work on most of his creations- wood, metal and engraving. His grandson should be a wealth of info, his son if still living. You have a wonderful firearm by a very well respected maker. Caveat, I have no relation to this man other than what I have read and heard over the years- always held in the highest esteem.