Here ya go (if you can find one
):
31 Traveler's Wagon, an offshoot of the Special Delivery which was an offshoot of the Station Wagon. Fold-down bed and wash basin, 10 gallon water tank (under roof), storage chest, and roll-up curtains on rear windows. Ford built 10 of them - IIRC, they all went to South America. No known survivors but there are a few replicas around.
More realistically, I'd go for an A or AA delivery outfitted with an OD and lower (numerically) rear gears - and maybe some engine mods and camping accessories.