This Western series ran for 20 seasons on CBS.

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Gunsmoke was able to make some big TV history. It was the longest-running live-action television series all the way up to 2019 when Law & Order: Special Victims Unit took its place.
Bettmann/Getty Images
Bettmann/Getty Images
This Western series ran for 20 seasons on CBS.
- The Adventures of Kit Carson
- Range Rider
- Gunsmoke
- The Gene Autry Show
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