London: George Allen & Unwin Ltd., 1955-56. First edition, fifth, fourth and second impressions respectively, three volumes, 8vo. Folding red and black maps at the end of each volume, free endpapers with some browning. Cloth, spine ends with a little fading, foot of spine of the first volume slightly worn, d.w.'s backed onto plain paper, not price clipped, spines browned with some loss, particularly to the first volume.