
The original came in one of the terrific Marx playsets and featured an open back wall and a lithographed interior. I made a few changes to my version, one being a back wall enclosure; made a few other changes (and mistakes), but looks okay for the tinplate layout.
I used Ed Berg's scanned graphics as the basis for this version, found here:
https://toyconnect.blogspot.com/search/label/Marx%20T3-21%20Army%20Training%20Center

