1957. First Edition. 128 pages. Pictorial dust jacket over orange cloth. Black and white photographs and diagrams. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. A previous owner's name to front free endpaper. Tape marks to endpapers. Boards have light shelf wear with minor corner bumping and crushing to spine ends. Some mild marks and staining to surfaces. Book has slight forward lean. Unclipped jacket has heavy edge wear with tears, chipping and creasing. Some tape repairs.