The Stowe Canoe Company was started in the early 70's by Bob Hartt. The canoes were 13' and 15' and were actually called Mansfield canoes. I think they also made an eleven footer, but not many. They were a very unusual canoe, molded of fiberglas, wth very thin mahogany ribs and wood stems and keel. They were about 39" or 40" in beam. Because of there beam, they were very stable and used predominantly for fishing.
Bob sold the company in the late 80's to an investment group who also owned "Vermont Tubbs" a prominent snowshoe manufacturer. The canoe end of the company seemed to fade and it went out of business in about 1991. The Merrimac canoe, made in southern NH was very similar as was one (which name escapes me) made in Tennessee. I know nothing about the present situation of these companies.
If more info is needed, I can probably get it as Bob is still going strong and lives in Vermont and Quebec. Also, my dates and dimensions might be off, but not by much.