Darrah, William Culp <br/><br/>
Powell of the Colorado  / 
William Culp Darrah 
 - Princeton :  The University Press,  1951 
 - ix, 426 p. :  ill. ;  24 cm. 
<br/><br/> Include index 
<br/><br/><label>Subjects--Personal Names: </label><br/>Powell, John Wesley, 1834-1902.