This info is as they say, from another forum (AAPK):
"Prior to the modern "collector" era, the canoe was not a widely produced pattern.
If we look back to the "golden age" era of late 1800's up to WWII, very few companies made the pattern. The three that producrd it the most were Case Brothers Cutlery Comapny, their arch-rival WR Case & Sons, and Union Cutlery Company, which later became KABAR.
Actually, Case Brothers and Union cutlery mainly produced the large canoe or "gunboat" pattern. I have never seen a Case Brothers "standard" size canoe (3-5/8"). Union Cutlery listed the smaller canoe in their catalogs in the early 1900's, but I have never seen one. Union did produce a lot of the bigger gunboats, though.
The only two other companies that I know of that made either canoes or gunboats in that era were Boker USA and Utica Cutlery....but neither company widely produced the patter and canoes or gunboats with these markings are super rare.
In the Pre-WWII era, WR Case & Sons was the highest volume producer of the "standard" size canoe - they made the 2-blade version (52131) and the very rare 3 blade version (53131).
After WWII, Case was the only company to keep the canoe in their product line, in the 2 blade version only.
An intersting factoid about the Case canoe....it was ONLY offered in genuine stag (52131) from the Case Tested era up to late 1964. In 1964 Case did a pilot run of the canoe in bone (62131)...and these had the CASE XX tang stamping. They did not put the 62131 into regular production until the following year (1965)...and all of the regular production models had the CASE XX USA tang stamp. This makes the CASE XX marked 62131 SUPER SUPER RARE. Beware as a lot of them have been counterfeitedout of newer 62131 patterns.
Case continued production of the 52131 along with the 62131 until genuine stag was discontinued in 1970.
As far as what company originated the pattern, if you count the gunboat as a canoe, I would say that Case Brothers probably originated the pattern. Just a guess. "
His cite: Steve Pfeiffer, author of Collecting Case Knives: Identification and Price Guide released October 1, 2009.
Personally, I haven't seen a response or history more well researched than that.
Robert