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On this day: August 21

Published On: Aug 20 2012 02:02:16 PM CDT   Updated On: Aug 21 2013 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 - Hawaii
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Public domain

1959: President Dwight D. Eisenhower signs an executive order proclaiming Hawaii the 50th state of the union. Hawaii's admission is currently commemorated by Hawaii Admission Day.

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