DESIGNER UNKNOWN THE MAIN LINE OF NATIONAL DEFENSE. Circa 1940s. 28x22 inches, 71x56 cm. Condition B+: minor losses at edges; tears, creases and abrasions at edges and along horizontal fold. Paper. The Association of American Railroads was founded in 1934. During the Second World War, the organization produced a variety of posters illustrating the railroad's contribution to the war effort.
