Do you ever mail a letter and wonder what happens to it after you drop it in the box? Read all about the post office and learn how letters are weighed, sorted, transported, culled, canceled, coded, binned, boxed, and sorted once again. Find out how people and machines work together to deliver the letters you send. Children's Books of 1982 (Library of Congress)

A step-by-step description of what happens to mail from the time it is deposited in the mailbox to it's arrival at its destination. Also includes brief historical facts about mail service in the United States.