Four volumes. All First editions thus. 8vo (20cm). (362); 304;(232);(236)pp. Original brown boards; lettered in gilt; printed blue label; in colourful original dust-jackets (blue, yellow, orange and green); spines a bit faded; a small tear on Volume III spine; and an abrasion on Volume IV spine; Volume I has a repaired bottom corner on page 359pp; still a good-looking set, difficult to find complete.