Powell, John Wesley,  1834-1902 <br/><br/>
The canons of the Colorado /  The 1869 discovery voyage down the Colorado River from Wyoming, into Colorado, through Utah, to Arizona and Nevada. 
John Wesley Powell ; illustrations by Thomas Moran and others. 
 - 64 pages :  illustrations ; 
<br/><br/><label>ISBN: </label>0896460592 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colorado River.<br/>Grand Canyon (Ariz.)<br/>United States--Exploring expeditions.