1958. First Edition. 223 pages. No dust jacket. Signed by the author. Green cloth covered boards with gilt. Black and white photographs and diagrams. Flat signed by authors to front. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. A previous owner's name to front free endpaper. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. Some moderate marks and staining to surfaces. Gilt lettering to spine is slightly dulled. Book has slight forward lean.