London: Macmillan, 1947-1975. hardcover. 27 of 34 volumes, lacking numbers 1-7. Extensively illustrated. 8vo, cloth, d.w.; some minor wear to dust wrappers(volume 7 lacking dust wrapper). London & New York: Various Publishers (Hutchinson, Macmillan, Potter), 1947-1975. A very good run of this largely complete set. very good / very good.