|Scottish-born inventor of the telephone, Alexander Graham Bell came to the United States in 1872 and demonstrated his first telephone four years later. The first commercial phone was offered a mere year later. Bell also worked on early aircraft designs, but none of his other efforts equalled the profound impact of the telephone.
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Linder, Greg ; consultant, Judith Tulloch. Alexander Graham Bell : a photo-illustrated biography. Mankato, Minn. : Bridgestone Books : Published by Capstone Press, c1999.
Fisher, Leonard Everett. Alexander Graham Bell. New York : Atheneum Books for Young Readers, c1999.