The set of Gomer Pyle: USMC (1964) can be seen in the background during the scene with Floyd and Goober at the gas station.
In the scene where Aunt Bee leaves Floyd's Barber Shop - a stand-in is used to show Floyd standing up from behind. Actor Howard McNear was suffering effects from a stroke that caused him to have problems with standing and walking.
This is the last episode that the interior of the courthouse is painted in a green shade. In Season 8, the interior of the courthouse is painted a light brown.
Andy states to Goober that a tornado hit Mayberry 12 years ago. This is the first mention of it.