On this day: May 13

Published On: May 12 2013 12:30:59 AM CDT   Updated On: May 13 2014 01:00:00 AM CDT

America declares war on Mexico, The Beatles film "Let It Be" premieres, Pope John Paul II survives an assassination attempt, and Tipper Gore doesn't like what she hears, all on this day.

OTD May 13 - Johnny Carson
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NBC Television

1994: Johnny Carson appears on "Late Show with David Letterman" in what would prove to be his last television appearance. After emerging from behind the curtain to a standing ovation, Carson requested to sit behind Letterman's desk, did so for a few moments as the audience continued to cheer and applaud, and then left the stage without saying a word to the audience.

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