H.C. ('HARRY') BECK: LONDON UNDERGROUND MAP

early pocket edition of the famous diagrammatic underground/tube map, numbered (750M -1-33), printed by Waterlow & Sons Limited, London, Dunstable and Watford, the map with two folds, with 'Places of Interest, &c.', and 'Theatres' to the verso, the title with 'We should welcome your comments...' and note that Cockfosters extension to 'open midsummer 1933', 16 x 22.7cm (some staining, wear, and tears along folds)