EXAMPLES FROM THE WEB FOR LETTER BOX
This was nothing more than a letter box for the freight thieves.
Rosemary peered into the letter box and saw that The Household Guardian was there.
I have established a letter box for their communications at the Hole in the Tree.
I was to put the missive in a letter box if I were accepted.
The clerk directed Tim to deposit the document in the letter box.
This messenger rifles it, reseals it, and deposits it in the letter box.
I discovered this by the dates on a lot of circulars in the letter box.
I don't know when I will have the courage to look in my letter box.
And now I must go to my letter box, she told Cap, the faithful.
As he drew near to the letter box he felt that till now he had been a composer.