1948. 3rd Edition. 521 pages. No dust jacket. Blue cloth with a blue leather spine. Vol IV. Pages are lightly tanned and thumbed at the edges, with light foxing. Binding has remained firm. Boards are a little rub worn with slight shelf wear to corners, spine and edges. Corners are a little bumped. Spine ends are a mildly crushed, with small splits and chips. Moderate splitting to both spine joints. Large surface to spine.