Good stuff, so what sort of material was proper for this vehicle?
I don't know about the trucks but the cars had Mohair.
Hampton Coach has been the gold standard for original restoration interiors on old cars for a long time. I don't know about trucks. I'd call them if I was wanting to go the OEM restoration route. They have pre cut kits for most antique cars, again I don't know about trucks. They aren't cheap though.