And no, it wasn't on Newhart (https://thatsallsiknow.blogspot.com/2020/10/newhart-season-7.html) despite what others might want you to believe:
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Witness a piece of television history as I take a look at Johnny Carson's very first TV appearance, a rare and fascinating glimpse into the early career of one of America's most beloved entertainers. This remarkable footage, caught on camera, showcases Carson's talent and charisma from the very beginning. Get ready to step back in time and experience the humble beginnings of a legendary career that would go on to shape the face of American television. Watch as Johnny Carson makes his debut on TV, a moment that would mark the start of an incredible journey to stardom.


0:00 Carson (https://www.alamy.com/stock-photo-newhart-episode-malling-in-love-again-season-7-johnny-carson-john-128575939.html) on (https://jacksonupperco.com/2017/10/24/the-ten-best-newhart-episodes-of-season-seven/) Newhart (https://www.imdb.com/title/tt0659975/) Clip
1:20 Intro
1:41 My search for Johnny's first clip
2:32 Who's Johnny
3:27 Johnny's First ever TV Appearance clip
4:28 Wrap Up