1951. Fourth Edition. 593 pages. No dust jacket. This is an ex-Library book. Red cloth. Ex-library copy, with expected inserts and inscriptions. Pages are moderately tanned and foxed throughout. Thumb-marking present. Noticeable creasing to gutter. Boards have mild edge-wear with slight rubbing to surfaces. Soft crushing to spine ends. Light tanning to spine and edges. Minor marks to boards. Binding is somewhat shaky, but pages remain intact.