Scott's specialized catalogue of United states stamps.   1923-. 

 - 1st ed.-. 
 - New York :  Scott's Publishing Co.,  1949. 
 - v. :  ill. ;  16-24 cm. 
<br/><br/> Cover title, 1935-    United States stamp catalogue, specialized (varies slightly)  Annual. 
<br/><br/> Open access. 
<br/><br/><label>LCCN: </label>356933  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Postage-stamps.<br/>United States.--Catalogs.