Chadwick, Douglas H. <br/><br/>
Yellowstone to Yukon / 
Douglas H. Chadwick ; photographs by Raymond Gehman. 
 - Washington :  National Geographic Society,  2000. 
 - 199 p. :  col. ill. ;  26 cm. 
<br/><br/>Includes bibliographical references (p. 199) and index. 
<br/><br/><label>ISBN: </label>0792278623 
<br/><br/><label>LCCN: </label>99005957 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States and Canada--Description and travel.<br/>United States and Canada--Pictorial works.
<br/><br/><label>Dewey Class. No.: </label>973.0426