1931. 12th edition. 288 pages. Pictorial dust jacket over purple cloth and gilt lettering. Contains black and white photographic plates. Binding remains firm.Pages are moderately tanned. Plates remain bright with minimal tanning. Boards have moderate edge-wear with bumping to corners and noticeable rubbing to surfaces.Mild sunning to spine and edges. Mild crushing to spine ends causing cloth to fray. Unclipped jacket. Jacket has heavy edge-wear with some areas of loss, heavy tears, chips and creasing. Water staining to front panel. Moderate Sunning to jacket spine and edges.