The encyclopedia Americana :  the international reference work. 

 - New York :  Americana Corporation,   1962. 
 - Vols. ;  26 cm. 
<br/><br/>V. 26-Sulphur-tramways,aeril ; 
<br/><br/>47   47 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia
<br/><br/><label>Dewey Class. No.: </label>031 / E19