Robert Hale, London, 1963. 1st edition. Blue cloth with red titles on spine. Cloth is bright and clean. Spine ends are bumped. 208pp with illustrations. Markings in red pen on map of underground. No other inscriptions. Touch of foxing to end pages, heavier foxing on pre-title and page edges. Page 179 has small tear and some creasing near bottom of page. Text not affected. Dust jacket has some foxing internally and on flaps, some rubbing and small closed tear at rear, bottom outside corner. Bumping at spine ends and corners with minor chipping at top of spine. It has been price clipped. A nice copy.