[rotorwrench]

If you can imagine any sort of bed type or covering, I'm sure it was made to fit many a Ford truck from that era. Package vans were more expensive than fitting side rails and a custom canvas top. A lot of Depot trucks were set up that way to haul cargo from the train stations to the end user. The Budd Company made all sorts of enclosed carrier or van bodies for the Ford truck chassis types but they would have been an extra expense.

Folks here in the US likely started using the term "pickup" way back in the model T era. The body for an open commercial car (the T bucket) wasn't much different than a roadster body of the day. In the AU and NZ down under, they were utility vehicles so the term "ute" stuck early on.