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American agricultural chemist and educator Dr. George Washington Carver (1864-1943) works in a laboratory, 1910s. (Photo by CM Battey/Anthony Barboza/Getty Images)

American agricultural chemist and educator Dr. George Washington Carver (1864-1943) works in a laboratory, 1910s. (Photo by CM Battey/Anthony Barboza/Getty Images)

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circa 1925: Studio portrait of Doctor George Washington Carver (c. 1864 - 1943), a scientist and professor at Tuskegee Institute in Alabama. (Photo by Hulton Archive/Getty Images)

circa 1925:  Studio portrait of Doctor George Washington Carver (c. 1864 - 1943), a scientist and professor at Tuskegee Institute in Alabama.  (Photo by Hulton Archive/Getty Images)

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American botanist and educator George Washington Carver (1864 - 1943) sits reading a copy of the Chicago Defender newspaper, while publisher John Henry Sengstacke stands next to him, possibly at the Chicago Defender offices, Chicago, IL, 1939. The newspaper headline reads 'Bring On Galento - Joe', a reference to a boxing match between Joe Louis and Anthony Galento. (Photo by The Abbott Sengstacke Family Papers/Robert Abbott Sengstacke/Getty Images)

American botanist and educator George Washington Carver (1864 - 1943) sits reading a copy of the Chicago Defender newspaper, while publisher John Henry Sengstacke stands next to him, possibly at the Chicago Defender offices, Chicago, IL, 1939. The newspaper headline reads 'Bring On Galento - Joe', a reference to a boxing match between Joe Louis and Anthony Galento. (Photo by The Abbott Sengstacke Family Papers/Robert Abbott Sengstacke/Getty Images)

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American agricultural chemist and educator Dr. George Washington Carver (1864-1943, left) with American industrialist Edsel Ford (1893 - 1943) of the Ford Motor Company at Henry Ford's Greenfield Village museum in Dearborn, Michigan, circa 1940. (Photo by FPG/Hulton Archive/Getty Images)

American agricultural chemist and educator Dr. George Washington Carver (1864-1943, left) with American industrialist Edsel Ford (1893 - 1943) of the Ford Motor Company at Henry Ford's Greenfield Village museum in Dearborn, Michigan, circa 1940.  (Photo by FPG/Hulton Archive/Getty Images)

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American scientist and educator Dr. George Washington Carver (1864 - 1943), works on one of his last paintings, entitled ‘The Yucca,’ early to mid twentieth century. (Photo by Photoquest/Getty Images)

American scientist and educator Dr. George Washington Carver (1864 - 1943), works on one of his last paintings, entitled ‘The Yucca,’ early to mid twentieth century. (Photo by Photoquest/Getty Images)