Wesley Powell, John <br/><br/>
Down the Colorado / 
John Wesley Powell ; Photographs and Epilogue Eliot Porter ; Foreword and notes by Don D. Fowler 
 - New York :  Promontory Press   1969. 
 - 168 pages :  illustrations ;  36 cm. 
<br/><br/><label>ISBN: </label>0883940124 
<br/><br/><label>LCCN: </label>7077353 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colorado River
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Discovery and exploration.