...Gunsmoke premiered on the radio?

...Gunsmoke premiered on Television?

...Gunsmoke was expanded to a full hour?

...Festus replaced Chester on Gunsmoke?

...Gunsmoke was first broadcast in color? .

...Gunsmoke ended its twenty year run on CBS television?

...Milburn Stone (Doc) became the first Gunsmoke regular star to pass away?

...the TV movie, Gunsmoke: Return to Dodge, first aired on television?

...the TV movie Gunsmoke: The Last Apache first aired on network television?

...the TV movie Gunsmoke: One Man's Justice first aired on network television?