1972. Consolidated Edition. 494 pages. Dust jacket over blue cloth with gilt lettering. Volume 1. Black and white illustrations throughout. Pages are bright and clear with mild foxing and tanning to text block edges, pastedowns and free endpapers. Binding remains firm. Book is slightly bowed and forward leaning with mild sunning and scuffing overall. Spine has heavier sunning with soft crushing to ends. Lettering remains bright and clear. Unclipped dust jacket with minor rubbing, chipping and tearing to edges. Moderate tanning and scuffing overall.