The postal service guide to U.S. stamps 
United States Postal Service 
 - New York  HarperCollins Publishers  ©2006 
 - 352 p. : col. ill. ; 27 cm 
<br/><br/><label>ISBN: </label>9780061145513 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Postage stamps -- United States -- Catalogs
<br/><br/><label>Dewey Class. No.: </label>769 COL