Billington, Ray Allen <br/><br/>
Westward expansion: a history of the American frontier 
Ray Allen Billington 
 - 3rd  ed. 
 - New York  Macmillan  c1976 
 - xvii,933p.; maps.; 24cm. 
<br/><br/> Library has 4th ed. also 
<br/><br/><label>Dewey Class. No.: </label>973  / BIL