Jack Teagarden is listed in the credits. Jack Teagarden is widely considered one of the greatest trombone players in jazz history.
It is revealed that Barney lives at 411 Elm Street, in Mayberry. Coincidentally, this is the exact same address as the Texas Schoolbook Depository Building in Dallas, from which Lee Harvey Oswald would shoot and kill President John F. Kennedy nearly two years later.
The Greendale mayor's door and the printing on its window are exactly the same as the Mayberry mayor's in The Mayberry Band (1962). Here, it simply says "Mayor's Office," while in the other, "Town of Mayberry" has been added above "Mayor's Office."
Paul Bryar is incorrectly credited as "Mr. Osgood" in this episode. Paul Bryar plays the Greendale Councilman that reads the article in the newspaper about Andy and Barney.