Very rare 25x38" WWI poster from the Cadillac Motor Car Company. No date or artist but the printer is Evan-Winter-Helb of Detroit. Image is of a diving DeHaviland DH-4 firing its forward gun at the retreating Huns below. I have this same poster in my personal collection and this is only the second one I have seen in 45 years of collecting. Colors are bright; some minor edge tears and wrinkling as is common; a little soiling in upper left and a small 1" chip from upper right corner not affecting the image. Needs to have some light cleaning and it should be linen mounted for preservation.