MAJOR GENERAL JOSEPH O. MAUBORGNE - AUTOGRAPHED SIGNED CHECK 10/08/1919 - HFSID 317463
Sale Price $324.00
Reg. $360.00
GENERAL JOSEPH O. MAUBORGNE
The future Chief Signal Officer signed this $30 check the year he
invented the one-time pad.
Check signed: "J. O. Mauborgne", 7¾x2¾. Washington, D.C.,
1919 October 8. Check #29, drawn on the Riggs National Bank of Washington,
D.C., payable to "R. Loghry" for $30. Entirely filled out by Mauborgne.
Endorsed on verso: "R. Loghry". Joseph Oswald Mauborgne (1881-1971)
joined the US Army in 1903, and attended the Army Signal School at Fort
Leavenworth (1909-1910). In 1912, Mauborgne installed the first radio on an
airplane, with which future Air Force commander Henry "Hap" Arnold sent the
first radio message from the air to Mauborgne on the ground. Two years later,
Mauborgne, this time aloft, conducted the first two-way radio communication with
a ground station (December 16, 1914). That same year, he found a solution to the
Playfair cypher (a substitution cypher using a pair of letters, not just
one). In 1919, Mauborgne and Gilbert Vernon of Bell Laboratories invented the
one-time pad, a code technique which still cannot be broken if used properly. As
Chief of Signal (1939-1941), Mauborgne pressed the first mass production of
radar. He retired on September 30, 1941, less than 6 weeks before Pearl
Harbor. He is enshrined in the Military Intelligence Hall of Fame.
Perforation marks. Creased from folds. Lightly toned. Otherwise, fine
condition.
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