On this day: August 21

Published On: Aug 20 2012 02:02:16 PM CDT   Updated On: Aug 21 2016 01:00:00 AM CDT

Lincoln and Douglas square off for the first time, Oldsmobile begins production, Hawaii becomes a state, and The Mona Lisa and the Mars Observer go missing, all on this day.

OTD August 21 - Mona Lisa
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1911: The Mona Lisa is stolen by Louvre employee Vincenzo Peruggia. It would be two years before the thief was caught, with the painting being returned to the Louvre in 1913.

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