1964. First Edition. 326 pages. White and blue illustrated dust jacket over dark grey cloth with a pull out diagram to the rear and black and white illustrations throughout. Mild tanning and foxing to pages with heavier tanning to pastedowns and endpapers. Pen and pencil inscriptions to front endpaper and slight dog-eared pages throughout. Visible tanning to text block edges and diagram has minimal issues. Boards have light sunning and mild bumping to corners. Fair crushing to spine ends and noticeable sunning to spine. Unclipped jacket with major edge wear and rubbing. Water marks to front and interior along with noticeable foxing to interior as well. Front flap is coming away from jacket with splitting to joints.