1951. Tenth Edition. Unpaginated. No dust jacket. Colour paper covered illustrative boards with black lettering to front. Colour illustrative plates throughout. Binding remains firm. Crinkling and cracking to gutters. Pages remain bright and clear with minimal tanning. Front endpaper has small rip to side edge. Tape mark to back pastedown. Boards have mild edge wear with slight rubbing to surfaces. There is bumping to corners and crushing to spine ends. Book has a slight forward lean. Tanning to spine and edges. Lettering is darkened slightly.