This detailed chromolithograph depicts the Mesozoic formations of the area surrounding the Grand Canyon, with a color-coded key at bottom. Relief is shown by contour lines. This map was included in the scarce Tertiary History of the Grand Canon District, which was devoted to a description of the methods and results of erosion on a grand scale. Lithograph by Julius Bein & Co., with topography by J.H. Renshawe under the direction of Clarence E. Dutton, the geologist in charge.
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Condition: A
Lightly toned with faint damp stain in top blank margin, far from map image.