1971. 1971 Reprint. 307 pages. Blue pictorial dust jacket over blue cloth. Volume IV. Rough cut pages are lightly tanned and thumbed at the edges, with creased corners and 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. The unclipped dust jacket has heavy edge wear, with tears, chips and areas of loss. Tanning to spine and edges.