In "The Ballad of Buster Baxter," Arthur said that he and Brain were playing the best of five thousand Checkers games, but he and Brain both won 2,645 games, which is 5,290 games.
"The Ballad of Buster Baxter" shows references/elements from previous stories that Buster wasn't a part of:
• Arthur and Buster's adventure book (From "Arthur's Faraway Friend")
• Arthur and the gang learning to square dance (From "Arthur and the Square Dance")
• Muffy's cookies that gang made (From "How the Cookie Crumbles")
• The key that Arthur, Brain, and Binky found (From "Finder's Key-pers")
When Arthur goes to the library in, "Buster's Back,"
the dog-man who Arthur imagined selling a Crosswire car to at the start of "Arthur's Pet Business," is there.
"Kresblain the Merry Magician" may be a combination of real-life magicians The Amazing Kreskin and David Blaine.
At the beginning of "Buster's Back," when Arthur is talking to Buster from mission control, Buster can be seen sitting behind the control console behind Arthur.
Singing Moose: (cheerfully) He's a sad sad bunny / A sad sad bunny / TV isn't funny when you're a sad sad bunny (Yee ha!)
Buster: (annnoyed) Hey, that's not very sad music!
Singing Moose: (tragically) He's a sad sad bunny / A sad, sad, sad, sad, bunny...
Buster: (sighs deeply)
Arthur: Mom! There's a singing moose in front of the house!
Buster: So, how long has the singing moose been here?
Arthur: I thought he came with you...
Buster: Whoa. THAT was weird.
Buster returns in this episode after being gone for 1/2 a season.
At the beginning of "Buster's Back," when Buster gets off of the space shuttle, he displays the powers of the Fantastic Four. He says it's because of the cosmic rays that he went through, a reference to how the Fantastic Four received their powers.
When Arthur imagines a Japanese version of Buster in the front yard, the Japanese Buster says "Osamu Tezuka, manga no kamisama". This is a reference to Ozamu Tezuka who was the "god of manga."