Post Office

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Across
  1. 3. a small piece of papper placed on a letter to show it is paid
  2. 6. the written direction found on a piece of mail
Down
  1. 1. United States postal code
  2. 2. packages, letters, post cards and other items you send through the mail
  3. 4. person who delivers the mail
  4. 5. relating to the post office or mail service