Gunsmoke first premiered as a radio drama on CBS, introducing audiences to the character Marshal Matt Dillon.
Gunsmoke made its television debut on CBS, marking the transition of the popular radio series to TV.
Gunsmoke changed its format from a half-hour show to a one-hour show, setting a new standard for television Westerns.
The final episode of Gunsmoke aired on CBS after 20 seasons, concluding one of the longest-running Western TV series.