1968. 57th Edition.. 324 pages. No dust jacket. Blue cloth with gilt lettering. Ownership plate to front pastedown. 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. Slight forward lean to text block.