On this day in 1791, Benjamin Banneker wrote to Thomas Jefferson, then Secretary of State, on 19 August 1791 sending him a manuscript of his Almanac.
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Born:
1584: Pierre Vernier
1646: John Flamsteed Ⓟ
1736: Erland Bring Ⓟ
1739: Georg Klügel Ⓟ
1919: Jaap Seidel Ⓟ
1924: Karl Aubert Ⓟ
1939: Alan Baker Ⓟ
Died:
1662: Blaise Pascal Ⓟ
1910: Eugène Rouché Ⓟ
1983: Octav Onicescu Ⓟ
1990: Leifur Ásgeirsson Ⓟ
1990: Ángel Gros Ⓟ
2000: David Champernowne Ⓟ
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