New York: Holt, Rinehart and Winston, 1968. Hardcover. Two volumes, first US edition, prior owner's name, otherwise very good in djs, lacking slipcase. Vol. I: xxii, 475p. + front., 16p. photos. Vol. II: xii, 754p. + front., 16p. photos, dj spine slightly stained. Vol. I is titled "The Unknown Years; vol. II, "The years of achievement"