1958. First Edition. 249 pages. No dust jacket. Blue cloth covered boards with gilt. Black and white photographs and diagrams. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Slight thumb marking in places. Minor pen inscription to front free endpaper. Boards have heavy shelf wear with bumping and fraying to corners and crushing and fraying to spine ends. All surfaces heavily tanned, particularly spine. Some additional marks and staining to surfaces. Gilt lettering to spine is dulled but remains brighter on front.