Alexander Graham Bell (1847-1922), Scottish-born American inventor, 1883. Artist: Unknown

Alexander Graham Bell (1847-1922), Scottish-born American inventor, 1883. Artist: Unknown

1-152-999 - Ann Ronan Picture Library/Heritage-Images

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Alexander Graham Bell (1847-1922), Scottish-born American inventor, 1883. Bell patented the telephone in 1876. Here he is in the lecture hall of Boston University, communicating by means of his second telephone to a colleague in the basement.

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