Classification of correspondence 

 - 4th 
 -  1932 
<br/><br/><label>Standard No.: </label>6,216 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBRARY SCIENCE
<br/><br/><label>Dewey Class. No.: </label>2:51(V73:28-8), G9 (2D)