Covers the inventor's development years, influences by previous sound devices, and timeline of the business aspect of the new communication machine.

Online collection of his papers from Library of Congress.

Communicates the story of Bell's wide-ranging interests and inventive work, much of it undertaken at Baddeck.

Details of the work involved, historical references illuminating likely mental models, diagrams of work.

Museum that showcases the invention of the telephone. Provides details on history, location, membership, and tours.

Article discusses his early life and his ideas about transmitting speech electrically.