DK Eyewitness Books: Invention: Discover the Fascinating Story of Inventions and Learn How They Have Changed the

The most trusted nonfiction series on the market, Eyewitness Books provide an in-depth, comprehensive look at their subjects with a unique integration of words and pictures.

A fascinating look at the world's earliest simple machines — wheels, gears, pulleys, and levers — to today's complicated telephones and plastics, Eyewitness: Invention presents the stories behind amazing inventions and how they changed the world.