Hey, Where's Euell Gibbons?

Here's a commercial for Post Grape Nuts that aired live during a 1955 CBS telecast of Mama, which during its' original 1949-55 live run, was sponsored by General Foods, mostly for Maxwell House Coffee. 

Where Are Those Wild Hickory Nuts?

From circa 1964, here are Andy Griffith and Don Knotts in a commercial which originally aired at the end of a telecast of The Andy Griffith Show. Back in the day, the stars of a given television show would appear for the sponsor's product at the end of that week's show. This is commercial for Post Grape Nuts, from General Foods, which sponsored Andy and the gang from Mayberry, Monday nights on CBS.