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Provides an introduction to the history and development of the telephone and explains how a telephone works. Includes information on Alexander Grah...

This series looks at the history and development of inventions that changed the world. Each book describes the people and events behind the inventi...

In 1917, in Cottingley, England, a girl named Elsie took a picture of her younger cousin, Frances. Also in the photo was a group of fairies, fairie...