Sofia Vassilieva was 10 years old when she played 6 year old Eloise.
The episode won an Emmy Award for Outstanding Music Composition for a Miniseries, Movie or a Special (Dramatic Underscore).
Both Gavin Creel and Sara Topham have a strong stage background.
2nd of 3 collabs with Julie Andrews and Kevin Lima. The others was Eloise At The Plaza and Enchanted.
The science fiction Christmas film "Santa Claus Conquers the Martians" (1964) can be seen being watched by Nanny and Sir Wilkes.