Your first two photos are a M-211 or one of the shop van variants based on the same chassis (the difference from the M135 is the dual 9.00x20 rear tires insteasd of single 11.00x20 on the M135)
The last 2 are a Chevrolet that looks like it belonged to the RCAF (perhaps Trenton based given your location?). I'm not sure when the making style seen on the door was used. More photos/information are needed to better identify the use of the truck.
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