This is a circa 1949 delivery panel wagon brochure marked PDCM1-3CM-949 that highlights the advantages of a Willys Panel Delivery Jeep. It’s a brochure that could act as a mailing brochure as well. What makes the brochure’s design a little unusual is that the first ‘fold’ is vertical, rather than horizontal, making it 17″ by 5.5″ when first unfolded.
If folded, this was the 8.5″ by 5.5″ front page:
And this the back: 
When unfolded, this makes a 17″ x 5.5″ graphic:
If unfolded all the way, this 17″ x 11″ complete foldout:
