1920. No Edition Remarks. 591 pages. No dust jacket. Brown cloth boards with lettering. Contains black and white illustrations and folded diagrams. Hinges are slightly cracked with exposed netting. Clean pages and illustrations with light tanning and mild foxing throughout. More pronounced to free endpapers and pastedowns. Pencil markings to front pastedown and free endpaper. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Lettering is darkened. Moderate tanning to spine and edges with crushing to spine ends. Visible wear marks to boards.