Gannett, Henry,  1846-1914. <br/><br/>
The average elevation of the United States, 
by Henry Gannett. 
<br/><br/>
<br/><br/><label>LCCN: </label>gs 07000573  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Altitudes.
<br/><br/><label>LC Class. No.: </label>E159  / .G192