Interested in industrial kits that ship/accept delivery inside the structure?

Seems like I remember OGR Ameritown buildings having a building called Barret's Company, that has a siding that goes inside it.

I have a few structures which receive freight cars inside or underneath.  The largest is my scratchbuilt furniture factory.

Here is the covered loading dock that holds a pair of 50 foot double door boxcars.

And here are two receiving doors in the same structure.  The furniture shipping spur leads off to the left.

It would certainly be an easy change to make to many buildings.