Nikola Tesla, Serbian-american Inventor
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Model Airplane In Wind Tunnel
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Astronaut Sunita L. Williams
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Nikola Tesla, Serbian-american Inventor
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Genetically Engineered Zebra Danio
Ted Kinsman
Agricultural Engineer
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Genetically Engineered Zebra Danio #1
Ted Kinsman
Genetically Engineered Zebra Danio #2
Ted Kinsman
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Ted Kinsman
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Tesla Tower, 1919
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Babbages First Difference Engine
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Four Row Picker Harvesting Cotton
Inga Spence
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Inga Spence
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Mary Jackson, American Mathematician #1
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Mary Jackson, American Mathematician #2
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Mary Jackson, American Mathematician #3
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Emily Warren Roebling
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Samuel Morse, American Inventor
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Archimedes, Ancient Greek Polymath #1
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Samuel Morse American Inventor #14
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Sikorsky Helicopter, 1944
NASA/Science Source
George Westinghouse
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Herbert Hoover, 31st American President
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Bleriot Lands In England, 1909
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Union Membership Card, 1886
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Bells Telephone, 1877
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Astronaut Tracy Caldwell Dyson
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Mature Gm Cotton
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Inga Spence
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