Hi Cliff:
Yes, Ford, that was my first thought too but I have not yet gotten a photo showing the rear of such.
Fords also had that sort of slatted body side and tailgate, another reason to think it might be one of those.
I had actually tentatively ID'd it as a G8T, of which thousands went to Russia, but they were not delivered until some time in 1943/44 so fell outside the scope of the photo's date.
I should peruse some of those CDs you sent me with "walk around" photos to try to see if I can find a good rear view of the earlier Fords but if you beat me to it that is OK too
Bill