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U.S. History Topics » Famous People » Inventors

What in the World Is That?

examines 16 inventions: the submarine, battery radio, cotton gin, reaper, electron microscope, telephone, gramophone, telecommunication cable, snow gauge, ornithopter, airphibian, and others. (Library of Congress)

   Go to this website
John P. Holland, head-and-shoulders portrait, climbing up hatch of his invention, the USS Holland submarine -- 1961, from a photograph taken between 1898 and 1914.

USS Holland submarine


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