Alexander Graham Bell (1847-1922) Scottish-born American inventor: patented telephone 1876. Bell in lecture hall of Boston University, communicating by means of his second telephone to colleague in basement. Wood engraving, Paris, 1883.
Alexander Graham Bell (1847-1922) Scottish-born American inventor: patented telephone 1876. Bell in lecture hall of Boston University, communicating by means of his second telephone to colleague in basement. Wood engraving, Paris, 1883.
Credit:
Album / Universal Images Group / Universal History Archive