In the very first scene, Barney is reading the same newspaper that he reads in the very last scene.
Opie is seen walking home from school on a dirt country road. Opie goes to school in the town of Mayberry and lives in Mayberry. There would be no need for him to be out on a country road.
Bill McLean is credited as "Mac" in this episode, but when Andy walks into the sporting goods store, Andy clearly calls him "Max."