The Mystery of the Red Triangle by W. C. Tuttle
1932. Sixth Impression. 248 pages. No dust jacket. Blue cloth. Pages are moderately tanned and foxed throughout. Thumb-marking present. Noticeable creasing to gutter. Front and rear boards are loose but still attached. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Visible crushing to spine ends. Noticeable tanning to spine and edges. Black marks to boards. Textblock is shaky.