September 10, 1955 "Gunsmoke" premiered on CBS-TV. From 1955 to 1961, it ran in half-hour episodes, and one-hour episodes from 1962 to 1975. A total of 635 episodes were aired over its 20 year run. The TV series was a spinoff of the radio western. The radio series first aired on CBS on April 26, 1952, and ended on June 18, 1961. The show stars William Conrad as Marshal Matt Dillon, Howard McNear as Doc Charles Adams, Georgia Ellis as Kitty Russell, and Parley Baer as Dillon's assistant, Chester Wesley Proudfoot. On this special podcast listen to a Golden Age of Radio episode of Gunsmoke.