8.75" tall, 4 oz. size box. 1950. Front has inset box w/image of Sgt. Preston and Yukon King w/"Inside This Package - 2 'Yukon Adventure' Picture Cards in Full Color! From 'Challenge Of The Yukon' Radio Program Starring Sgt. Preston And His Wonder-Dog, 'Yukon King'." Back panel shows five example cards, from a set of 36 cards, each 2.25x3.25" and issued two per box of Quaker Puffed Wheat/Puffed Rice. ©1950. Side panels also promote card set. Box is complete and has been emptied of its original cereal contents and assembled w/cardboard frame inside to keeps its shape for display. Box shows scattered lt. wear w/some corner creases and aging but Fine overall. Comes w/11.75x18.25" flat for same box. Flat has been folded along center scored line and has moderate but even aging and is Exc. Unused file copy.