This is a 1928 ad for a Aero Brand Cyanamid! The size of the ad is approximately 10.5x14inches. The caption for this ad is 'How 34 Farmers proved the effectiveness of Cyanamid as a source of nitrogen for cotton' The ad is in good overall condition, with some light wear. This vintage ad would look great framed and displayed! Add it to your collecction today!