Saint Valentine dies a martyr, President Polk has his picture snapped, Al Capone sends his foes a violent Valentine's Day message, and Jackie Kennedy invites TV viewers inside the White House, all on this day.
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1942: Politician and media mogul Michael Bloomberg, the mayor of New York City since 2002, is born in Boston, Mass. With a net worth of $25 billion in 2012, he also ranks as the 10th-richest person in the United States.