Good idea to pursue getting the facts straight. Nothing puts me off my feed faster than a listing that says, "rare 1906 canoe" when it is clearly not. I skip by when I see that. I have learned that helping someone understand what the canoe actually is (and its true value) can be more difficult than doing the restoration. One of my personal favorites was a Rushton canoe the owner was certain had incredible value, despite a very poorly done restoration. She opted to sell at auction, yielded less than half of my offer after paying for transport and fees. The buyer got what looked like a decent deal (sort of) and then tried to sell it for more than double what he had paid for it. It was listed, relisted, relisted again, all for far more than the value.... In the end, he had lowered his price to about what it was really worth.... It hasn't been listed since. Hopefully whoever bought it did not get too badly stung. As you correctly note, having the facts right matters. Benson will get you there once you confirm the numbers.
A side bar. What is it about 1906? It seems like that is the default number that everyone loves to use for dating an older canoe. Not 1905, 1907, or 1911, always (seemingly) 1906. Years ago, that was my trigger to start learning about Morris canoes. Had he built 1/5th of the canoes attributed to him for 1906, his production would have been far more than Old Town and Carleton together............