Alison Arngrim (Nellie) stated at the 2019 Little House on the Prairie cast reunion that this episode was the most difficult emotionally for her to film.
Katy Kurtzman who plays Anna Gillberg in the Season 3 episode, "The Music Box". Is young Caroline in the episode called I remember I remember..
The episode starts off with it being Laura's birthday, however, the real Laura Ingalls Wilder's birthday is February 7th. There is no snow or any indication of it being winter in the episode