Ashley old lad the presence of a roof rack does not necessarily require a permanent ladder. Perhaps they didn’t use it, perhaps the ladder fell off. Maybe they carry a wooden one in the trailer. The fact is that the truck I used as a model for this model also had a roof rack and no ladder. Best go ask Micky White I guess lol.
I made an accurate model of a real wagon and I’d hate to be marked down because a judge thinks there should be a ladder there…
Howard would make noises about the hubs being the same colour as the wheels, but it does happen and in this case its correct.