Sullivan, George. <br/><br/>
Lewis and Clark 
George Sullivan 
 - ed. 
 - [S.l.]  Scholastic Reference  1999 
 - 128 p. 
 - In their own words .
 - In their own words .
<br/><br/><label>ISBN: </label>0329217526 0439095530 (pbk.) 0439147492 1413135625