The first halftrack is a 1937 GMC Maple Leaf modified by J.Adalbert Landry, a Buick-McLaughlin dealer of Mont-Joli, QC. He was the first to use the name "Auto Neige" as he invented a rubber track to transform cars and trucks in snowmobile (name patented by Virgil White for his snow attatchment kit for Ford model T before it was used for a sled or "motoneige"). Landry modified over 100 vehicles between 1919-1948. The other halfrack is a Linn.
http://flinflonheritageproject.com/w...67/1038957.pdf
Landry was also a distributor of Shell products; on the door of the truck you see J. A. Landry, Mont-Joli and the phone number of his business.