At one point, Pablo mentions that Ash said he tried burning the book once to destroy it. This is a reference to climax of The Evil Dead (1981), which involves Ash burning the book to defeat the evil.
The song at the end of the episode is Renegade by Styx
The director of this episode is Michael Hurst. He has previously worked with Sam Raimi, Bruce Campbell, Lucy Lawless, and/or Rob Tapert on Hercules: The Legendary Journeys (1995), Xena: Warrior Princess (1995), Hercules and Xena - The Animated Movie: The Battle for Mount Olympus (1998), Jack of All Trades (2000), Bitch Slap (2009), Spartacus: Gods of the Arena (2011), and Spartacus (2010) as an actor, director, and/or producer.
When asked where they live, Lower Peninsula of Michigan residents may hold up their right palm and point to a spot on it to indicate the location. This is how Lam showed Ash where the militia was located.