Mayberry R.F.D. (1968–1971)
The Andy Griffith Show: Mayberry R.F.D. (1968) sets up the premise.
Episode title lends its name to spin-off series
George Lindsey refers to 'Mayberry back home' several times
Mention of actress portraying Aunt Bee for 10 years
One of the possible answers to the question "The Andy Griffith Show was a spinoff of" in the age verification test is "Mayberry R.F.D.".
"This is the worst display of justice since Mayberry R.F.D!"
Mentioned by Tom as a '60s TV sitcom that featured a widower
"Jack Mayberry RFD"
"CBS canceled 'Mayberry' and moved 'Burnett' to Saturday."
Carrie, "What is this, Mayberry?"
Andrew: "... It's, like, Mayberry."
Used in clue in the category TV Spin-Offs