Watch David Letterman Ask Fans To Tune In To His First-Ever 'Late Show' In 1993

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David Letterman is retiring from "The Late Show" in 2015.

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After starting on NBC's "Late Night," Letterman's first "Late Show" appearance on CBS was August 30, 1993.

Ahead of his debut, Letterman appeared on a local St. Louis network KMOV asking fans to tune in to his first show.

Check out the video below:

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