Canadian Chevrolet Maple Leaf 4x4 artillery tractors?

[David_Hayward (RIP)]

The YR was a 134 inch wheelbase, and YS 160 inch wheelbase, 4 x 2 1941 Model Year trucks. There were no rhd YR and possibly YS trucks so far as I can see. All rhd British trucks with rhd were Canadian-supplied.

The MR and MS were 1942 Models, same wheelbase as the YR and YS respectively. However the 1942 Models were not introduced until October 1941. My concern was that there may not have been enough time for 1942 MODELS to be supplied from Tarrytown, New York Plant but there is a possibility that there was a mixture of both. I have checked my British records and found that there were a few MS Models supplied to the British Army but I have no idea when! However the YR was freely supplied for military and particularly essential non-military users such as for ambulances.