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.
Gail Gibbons has published close to fifty distinguished nonfiction titles with Holiday House. According to "The Washington Post," "Gail Gibbons has taught more preschoolers and early readers about the world than any other children's writer-illustrator." She lives in Vermont. Her website is www.gailgibbons.com
