The Lake Farm is the same farm/set as the Kent Farm in Smallville. The farmhouse is the same painted yellow exterior for its appearance in Riverdale, as it was throughout the series of Smallville. Both series are filmed in British Columbia, Canada. The barn was also used as the Blossom's barn/storage area in season 1 of Riverdale.
Jughead's alias name is Kal, this is the kryptonian name of Superman.
"Laurie Lake" is a character in an "Archie comics" series called Wilbur, which was published in the 1950s.
Riley Keough follows in the TV series footsteps of her famous grandmother, Priscilla Presley, the latter had participated in "Dallas" in the 1980s. She is the grand-daughter of Elvis Presley, who toured with Johnny Cash at one-time, thus the title of this chapter, "The Man in Black".