International Picture Language, The First Rules of Isotype -- Edgar Dale's copy
London: Kegan Paul, Trench, Trubner & Co., 1936. First Printing. Hardcover. 12mo, 6 x 4.25 inches, original cloth backed boards, near very good, light wear and soil to covers, slight motting to cloth, stamp of Edgar Dale, Curriculum Division, Ohio State University in Columbus, and his small white numbers on.....