1968. 2nd Edition. 297 pages. Red and blue jacket over purple cloth. Pages are lightly tanned and thumbed at the edges, with light foxing. Binding has remained firm. Boards are a little rub worn, slight shelf wear to corners, spine and edges. Corners are a little bumped. Spine ends are mildly crushed. Light tanning to spine and edges. The unclipped dust jacket has moderate edge wear, tears and chips to edges and spine ends. Light tanning to spine and edges.