1941. Reprinted. 216 pages. No dust jacket. Blue cloth covered boards with gilt. Black and white photographs and diagrams. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Previous owner's name to front pastedown. Some marginalia and pencil drawings. Boards have heavy shelf wear with bumping and fraying to corners and crushing, fraying and tearing to spine ends and edges. All surfaces tanned and sunned, particularly spine. Some additional moderate marks and staining. Boards are slightly bowed.