This listing is for a vintage paper advertisement. This is a 1956 ad for a World Book Encylopedia! The size of the ad is approximately 8.5x11.5inches. The caption for this ad is 'Justice William O. Douglas discusses the American court system with you in the World Book Encyclopedia' The ad is in good overall condition, with some wear including a light vertical crease. This vintage ad would look great framed and displayed! Add it to your collection today!