1964. Second Edition. 956 pages. Pictorial dust jacket over green cloth. Black and white illustrations and folded maps throughout. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Minor pencil inscription and tape marks to endpapers. Boards have moderate shelf wear with some bumping and fraying to corners and some tanning and marking. Gilt lettering to spine is slightly dulled. Unclipped jacket has heavy edge wear with tears, chipping, heavy rubbing and creasing. Spine noticeably sunned.