1942. Reprint. 128 pages. No dust jacket. Red cloth. Contains black and white illustrations and diagrams throughout. Pages remain bright and clear with minimal tanning and foxing. Occasional thumb-marking present. Minor pen marking to bottom edge of text-block. Previous owner's pen inscription to rear pastedown. Binding remains firm. Boards have mild edge wear with bumping to corners and rubbing to surfaces. Crushing to spine ends. Visible sunning to spine and edges. Scuffing and pale rubbed marks to all surfaces. Small areas of water staining overall, with minor ring mark to front board. Book is slightly bowed and forward leaning. Price sticker and sticker remnants to rear board.