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).
Jeffrey Tambor (Mr. Salomone) and Christine Baranski (Prunella Stickler) would later appear together in "How the Grinch Stole Christmas" (2000).
Both Gavin Creel and Sara Topham have a strong stage background.
The science fiction Christmas film "Santa Claus Conquers the Martians" (1964) can be seen being watched by Nanny and Sir Wilkes.