The Exploration of the Colorado River and Its Canyons by J. W. Powell
1961. New Dover Edition. 400 pages. Blue paperback. Contains black and white illustrations throughout. Pages remain bright and clear with minimal tanning and foxing. Pencil inscription to half title page. Thumb-marking present. Pulling to covers. Binding remains firm. Paper covers have moderate edge-wear with curling to corners and rubbing to surfaces. Noticeable tanning to spine and edges. Visible scuffing to edges.