MAJOR GENERAL JOSEPH O. MAUBORGNE - AUTOGRAPHED SIGNED CHECK 07/01/1918 - HFSID 320026
GENERAL JOSEPH MAUBORGNE World War I-dated $70 check signed by the inventor and future Chief of Signal Check signed: "J. O. Mauborgne", 7¾x3. Encased in a 12¼x5½ case with PSA/DNA authentication label. Washington, D.C., 1918 July 1.
Sale Price $288.00
GENERAL JOSEPH MAUBORGNE
World War I-dated $70 check signed by the inventor and future Chief of Signal
Check signed: "J. O. Mauborgne", 7¾x3. Encased in a 12¼x5½ case with PSA/DNA authentication label. Washington, D.C., 1918 July 1. Check #126, drawn on Riggs National Bank, payable to "E. C. Mauborgne" for $70.00. Entirely filled out by Joseph Mauborgne. Endorsed on verso by E. C. Mauborgne and one other. 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. Toned. Creased from folds. Corners lightly creased. Otherwise, fine condition.
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