Here is a lead on an early Ford dealership in Bouctouche, NB.
https://www.facebook.com/irvingoil/p...8273136537005/
As far as I know, the Irving interests still have a dealership arrangement with Ford but they only sell to their own companies. Probably a pretty unique situation and maybe the only one that exists. I understand that the vehicles that they buy from Ford are delivered through regular Ford dealerships in the area. Several years ago, I saw a brass plaque in the lobby of the Irving Oil Head Office commemorating the fact that they had an early Ford delaership. A letter to Irving Oil may get you some info. I have a framed publicity photo of a 1933 or 34 Ford that was doing a cross canada "Economy Test" at the time. It has signage on it and dignitaries and general public nearby. The photo was taken on Union St. in Saint John, NB probably in the area of the Ford dealership.
The two Ford dealerships in NB that I remember from the 50's were Briggs Motors (Saint John) and Percy Bridges (Gagetown). When Percy closed up in the 60's 2 vehicles that were in the showroom/garage were a 1917? Fordon Tractor and a 1958 Edsel. I bought some Model A and T parts from Percy before he closed so I think his family had the dealership from the 20's or 30's.
In general terms, a "City Directory" for various Canadian cities would be a good place to start to compile a list of early Ford dealers. Good luck!