Former lab assistant to Thomas Edison (1879–1936) who, in 1911, made the first official airmail flight in the United States. Two commemorative air mail postal covers, each signed in fountain pen by Ovington, adding “First U.S. Air Mail Pilot (1911)” to one example. In very good to fine condition with Ovington signing over a stamping on one envelope. Accompanied by a brief TLS in which he references signing the covers and provides a brief biography. RRAuction COA.
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