Mystery GMC Tractor/Trailers

[gordon]

I take it the hood side signs say GENERAL MOTORS TRUCK then? it's difficult to make out.

The parking lights on the wings say 1940 model, before that they had running lights in the headlights, so seized or re-routed stuff that was going to France or the like would be favorite.

Crismon has one shot of an ACX 453 dump on p147, described as a 2.5 ton 4 x 2 with a 256 cu in engine, and your featured trucks just look like a tractor version of that, though without hood side signs.

Superior and Yellow Coach did big-style tin-bashing, bus bodies, workshop trucks, DUKW hulls, and would have nothing to do with these trucks, which are plain 4 x 2 tractors.

Gordon