1957. 21st edition. 343 pages. White jacket over blue cloth with gilt lettering. Pages are clean and bright, and appear almost good as new. With minimal tanning throughout. 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. Light wear to unclipped dust jacket with tears, nicks and creases to spine, edge and corners. Heavy tanning to spine and edges.