1954. Twenty-third edition. 160 pages. Pictorial dust jacket over green cloth. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Dedication to front free endpaper. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces tanned and sunned, particularly spine. Clipped jacket has heavy wear with tears, chipping and creasing. Some rubbing and marking to surfaces. Some small tape marks.