On this day: February 21

Posted: 0:46 AM EST Feb 21, 2013   Updated: 2:00 AM EST Feb 21, 2015

The Washington Monument is dedicated, Alka-Seltzer is sold for the first time, the peace symbol is born, Malcolm X is assassinated, and Nixon heads to China, all on this day.

OTD February 21 - David Letterman
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CBS Television

2000: David Letterman returns to the late-night talk show "Late Show with David Letterman" about five weeks after having an emergency quintuple heart bypass operation. Letterman brought all but one of the doctors and nurses on stage who had participated in his surgery and recovery to tearfully thank them.

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Slideshow Of The Day

On this Day

  • Supreme Court Justice Thurgood Marshall

    Library of Congress

    On this day: August 30

    The vacuum is invented, Ty Cobb makes his major-league debut, Bob Dylan releases "Highway 61 Revisited," and Thurgood Marshall is confirmed as the first black justice on the Supreme Court, all on this day.