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 rotting hull of a ship...lost gold...coins...gems...Sunken Treasure

Today treasure hunting is a big business. Searchers use metal detectors and sonar to locate treasure on the ocean floor. Divers use high-powered machinery to uncover objects buried in the sand and to raise them to the surface. And more than just treasures are discovered. A whole window into the past is opened up. A salvage can take months or even years. But it's worth it

Here is a fascinating journey through those dark, mysterious hollow places on earth--sea caves, lava caves, ice caves, and more. Caves and Caverns also includes information on where to go, what to bring, and how to have a safe, exciting spelunking adventure of your own. This title will be enjoyed by budding scientists and explorers. --School Library Journal
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This book about nature and the changing seasons focuses on a young boy and a very special apple tree. In Gail Gibbons's bright illustrations, Arnold collects apple blossoms in spring, builds a tree house in summer, makes apple pie and cider in the fall, and hangs strings of popcorn and berries for the birds in winter, among other seasonal activities. Includes a recipe for apple pie and a description of how an apple cider press works.

Simple language and bold illustrations make this a fun and informative book about the sun. Add this one to primary-grade science shelves. --Booklist
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A look at the life of knights in the Middle Ages and a collection of tales about their adventures.

What if we could open up our planet and look inside? From its red-hot core to the highest mountain peak, come see Earth as you've never seen it before in a colorful introduction to the powerful forces shaping our home.

"Young naturalists will be captivated by this succinctly written, well-organized, brightly illustrated introduction to monarch butterflies."--"School Library Journal." Includes instructions on how to raise a monarch.

Gibbons examines the physical characteristics, behavior, habitats, and different kinds of spiders.

Their tadpole beginnings, noises they make, body parts and how they live.