UPDATE: Was on eBay.
For some reason the Willys Export company advertised the Cargo & Personnel Carrier in a German Magazine. Seller lists this as a 1950 magazine. Given the early grille, this may well be the case. This is really an interesting piece.
“Willys Overland Export Co. Universal Jeep + Dorndorf – Orig. Anzeigen von 1950. Original Seite aus einem alten Magazine.”