1963. Fourth Edition Revised. 309 pages. No dust jacket. Brown cloth with gilt lettering. Volume I. Black and white photographic plates and illustrations throughout. Light foxing and tanning to pages, text block edges, pastedowns and free endpapers. Minor creasing to gutters and hinges. Binding remains firm. Boards have minor corner bumping and edgewear with mild scuffing overall. Spine has light tanning with soft crushing to ends. Lettering remains bright and clear.