Ambrose, Stephen E. <br/><br/>
Undaunted courage :  Meriwether Lewis, Thomas Jefferson, and the opening of the American West / 
by Stephen E. Ambrose. 
 - New York, N.Y. :  Simon & Schuster,  c1996. 
 - 521 p. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0684811073 
<br/><br/><label>LCCN: </label>950357146 
<br/><br/><label>Subjects--Personal Names: </label><br/>Lewis, Meriwether, 1774-1809. <br/>Clark, William, 1770-1838. <br/>Jefferson, Thomas 1743-1826. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lewis and Clark expediciton--1804-1806.<br/>Explorers--Biography.--United States