1934. Second Edition. 208 pages. No dust jacket. Blue cloth boards with lettering. Contains black and white illustrations and folded diagrams in rear pocket. Clean pages and illustrations with light tanning and mild foxing throughout. More pronounced to free endpapers and pastedowns. Pencil markings to front free endpaper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Lettering is bright and clear. Minor sunning to spine and edges with crushing to spine ends. Visible wear marks to boards.