Trails West  / 
Prepared by the Special Publications Division, National Geographic Society, Washington, D.C. 
 - Washington :  National Geographic Society,  1979. 
 - 207 pages :  illustrations ;  26 cm. 
 - 910.4(73)(21) (NLA) .
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trails--West (U.S.)<br/>Overland journeys to the Pacific
<br/><br/><label>Subjects--Geographic Terms: </label><br/>West (U.S.)--Description and travel
<br/><br/><label>Universal Decimal Class. No.: </label>910.4(73)(21) (NLA)