Keller, Helen,  1880-1968 <br/><br/>
Optimism :  An Essay  [electronic resource] / 
Helen Keller 
 -  Project Gutenberg,  2010 
 - Project Gutenberg  31622 .
<br/><br/> Public domain in the USA. 
<br/><br/>Electronic text 
<br/><br/><label>Subjects--Index Terms: </label>Optimism 
<br/><br/><label>LC Class. No.: </label>BJ