I don't always find "rare" body styles, especially rare factory body styles but lately I've managed to find some cool things.
This picture was taken in 1932 at the Boulder Canyon project first aid station. It shows a 1931 AA Ambulance (280-A).
Note the deluxe bumper, radiator shell and wire wheels.
Also of interest is that the fenders are painted body color and the fronts have fender lights mounted. There is also what appears to be an emergency light mounted on the driver's side A pillar. The horn is not Model A, perhaps a siren took the original's place?
This ambulance is appropriately enough numbered "31."
-Tim