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How to Send a Letter or Postcard: Domestic - USPS.com
How to Mail a Letter or Postcard the Correct Way - wikiHow
First-Class Mail & Postage | USPS
How to Mail a Letter: Step-by-Step Guide for Successful Delivery
How to Mail a Letter - National Postal Museum
How to Send a Letter or Postcard: International | USPS
How To Mail a Letter Or Postcard - YouTube
How To Mail A Letter | [5 Simple Steps Inside] - My Post Office …
How to Send a Letter - Wonder.Legal
Use This Map to Find Out When Your Sent Mail Should Arrive