According to what I've read tonight Ford didn't build their own bodies, but used a number of companies to made different standard & custom bodies for them. This began before the Model T. Some of the companies assembled specialty & custom bodies for Ford's customers, like the G. E. sales trucks, the ones for NCR, the Ambulances, the military vehicles, etc. There were body companies that sold direct to consumers too. The lightest Sedan Delivery van was more based on a car, but the heavier vans were built on the TT, AA, or BB truck chassis, some with dual rear wheels & many with V-8 engine past 1932 or so. So I'd be curious to see if someone uncovers this "wagon's" peculiar history & reason for being in life.