BLACK HISTORY FACTS! Fact #9 African-American Mechanical - TopicsExpress



          

BLACK HISTORY FACTS! Fact #9 African-American Mechanical Engineer David Crosthwait, Jr. created the heating systems for New York Citys Rockefeller Center and Radio City Music Hall. Fact #15 In 1899, African-American dentist, Harvard faculty member and golf fan Dr. George Franklin Grant invented the worlds first golf tee. Fact #17 Lonnie G. Johnson, an engineer who performed award-winning system engineering work for NASA space probes, invented the Super Soaker water gun, one of the worlds most popular toys, in the 1980s.
Posted on: Wed, 05 Feb 2014 04:22:43 +0000

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