1942. First Edition. 175 pages. No dust jacket. Blue cloth boards with gilt lettering. Contains black and white diagrams. Rear pocket is empty. Ex-libris label. Clean pages and diagrams with noticeable tanning and foxing throughout. More pronounced to free endpapers and pastedowns. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is darkened. Moderate sunning to spine and edges with crushing to spine ends. Visible wear marks to boards.