Nora calling Ray her husband is a reference to the real-life marriage between Courtney Ford and Brandon Routh.
The woman that Damien Darhk sees on his phone for a romantic match was Carrie Cutter/Cupid from Arrow (2012).
The title is a reference to the 2005 Cormac McCarthy novel "No Country for Old Men" and its 2007 film adaptation.
Kuasa reveals that a totem can never be completely destroyed, seemingly contradicting Macalester who claims that the "soul" of a Totem will leave if smashed. It should be noted that the fragments of the Fire Totem seen in this episode appear active, despite "losing its sparkle" after being broken in Vixen (2015), in addition Ray stated he'd found a way to fix the totem further supporting Kuasa's statement.
Zari mentions wanting to visit Mount St. Helens to witness its eruption. Said event in 1980 was the deadliest and most economically destructive volcanic event in the United States' history. Caused by a 5.1 magnitude earthquake, the entire north face fell away, leaving the now-famous mile-wide crater; the eruption column reached 80,000 feet into the atmosphere within fifteen minutes, and strong high-altitude winds deposited ash in eleven states and five Canadian provinces. The eruption released 24 megatons of thermal energy, equivalent to 1,600 times the size of Little Boy, the atomic bomb dropped on Hiroshima.