Don: My truck was a 31 AA. The wooden body covered the rear
wheels with a curved steel arch. The smaller single A trucks were almost
identical in appearance ...just smaller.. again, the width of the body allowed
it to cover the rear wheels. On the AA, the rear doors might be a wooden
frame with a heavy steel mesh insert, or as on mine, a wooden frame (oak) with a
plywood insert with small windows in each door. Hope this info helps
some. Good luck on your restoration. regards, Gary