Keyes, Nelson Beecher  <br/><br/>
The American frontier :   our unique heritage, 
by Nelson Beecher Keyes. 
 - 1st ed. 
 - Garden City :  Hanover House,  1954. 
 - 384 p.  22 cm. 
 - 9(73) (NLA) .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Frontier and pioneer life--United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States --Territorial expansion.
<br/><br/><label>Universal Decimal Class. No.: </label>9(73) (NLA)