United States official postal guide July 1953. 

 - Washington,  1951. 
 - 769 p. :  tbls ;  23 cm. 
<br/><br/>Vol 5 1 part Domestic postal service including international money order business. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Servicios postales.<br/>Correos.<br/>Guías.