When the police officers storm into Nikki's hotel room, you can see insects on the television, possibly the same insect documentary that has become a staple of the Fargo franchise.
In the conversation with Emmit (Ewan McGregor) in the car, Sy (Michael Stuhlbarg) refers to Ray as a "leptard" ("your leptard brother"). The same insult was used by Lenny (Paul Braunstein) in season one to refer to Mr. Wrench (Russell Harvard), who returns in this episode.
Michael Stuhlbarg (Sy Feltz) & Shea Whigham (Moe Dammick) also worked together on Boardwalk Empire (2010) as Arnold Rothstein & Elias 'Eli' Thompson respectively.