 I'm Greg Bell, and we open in the Wild West with Gunsmoke, and later soar into the far distant future for the Murray Leinster story First Contact, as produced for the mutual series Exploring Tomorrow. Radio's Gunsmoke debuted in 1952, featuring William Conrad as Marshal Matt Dillon, supported by Parley Bear as Chester, Georgia Ellis as Kitty, and Howard McNair as Doc. This episode, known as Sweet and Sour, also features Lynn Allen, Lawrence Dobkin, and Harry Bartell, and it's from August 5th, 1956.