* FirstAppearance:
** "Bleeding Gums" Murphy, and Jacqueline Bouvier (flashback only).
** In production order it's also the first for Ralph Wiggum ([[EarlyInstallmentWeirdness though he's nothing like]] the [[TheDitz character he would become]]), Mr. Largo, and Snowball II, though the season being aired OutOfOrder meant "Simpsons Roasting on an Open Fire" was the first time audiences actually saw them on-screen.
** This is the (proper) debut of Janey Powell. Her design in "Bart the General" was nothing like it is here, right down to the different skin color. Unless that was a different Janey...