Terry's shirt this episode is "Santa for President"
Some of the film references that this Christmas episode draws on are Jingle All the Way (1996), It's a Wonderful Life (1946) and Escape from New York (1981).
This Christmas episode actually premiered before Thanksgiving.
Yumyulak helps kill Jamie with a snow globe, which may be a reference to a similar killing in J'ai Obtenu Cette (2012).
When Korvo takes the gun away from Jesse, he says "You'll shoot your eye out", which is what Ralphie's parents tell him he'll do with his BB gun in A Christmas Story (1983).