1950. No Edition Remarks. Unpaginated. Two books in a brown slipcase. Both paginated, volumes I & II. Colour illustrated dust jackets over brown cloth. There is black and white illustrations throughout. Minor tanning to pages with slight dog-eared pages throughout and mild tanning to text block edges. Both boards have minor rubbing and sunning with visible bumping to corners. Soft crushing to spine ends and heavier sunning to spine. Unclipped jackets with visible edge wear, splitting to joints and sunning. Volume I's jacket is detached from spine and in two pieces. Slipcase has visible water marks and splitting to joints.