The real Charles and Mary Ingalls shared a birthday on January 10. The show did not incorporate this as they celebrate their birthdays separately throughout the show.
Melissa Sue Anderson turned 16 on September 26, 1978, just 8 days after this episode aired.
Matthew Labyorteaux who plays Andy Garvey is the younger brother of Patrick Labyorteaux who plays Albert in real life.
The actor who plays Albert (Matthew Laborteaux) also played young Charles Ingalls in Season 4 episode 16. (I Remember, I Remember)