This listing is for a vintage paper advertisement. This is a 1918 ad for a Houghton Mifflin Company! The size of the ad is approximately 3x4.5inches. The caption for this ad is 'A new Muir book Steep Trails by John Muir' The ad is in good overall condition, with some light wear. This vintage ad would look great framed and displayed! Add it to your collection today!