Before Scrooge starts telling the story to Louie about his and Goldie's days in the Wild West, Louie immediately thinks it's going to be another romance, referencing the film The Princess Bride (1987).
John D Rockerduck's first appearance in Animation. In the comics he was one of Scrooge's business rivals who wished to become the richest duck in the world, which this trait was used with Flintheart Glomgold for this and the original DuckTales (1987) series.
Sheriff Marshal Cabrera is apparently an ancestor of Fenton Crackshell-Cabrera/Gizmoduck. The two have the same last name and voice actor, in addition to both having a similar alter ego (though the Sheriff's suit is more old-fashioned compared to the Gizmosuit), along with the fact they both annoy Gyro.
Rockerduck's bodyguard resembles both Oddjob and Jaws from James Bond 007's franchise.
First appearance of Gyro's time tub in the DuckTales (2017) Reboot, of which was previously features in 3 episodes of the Original DuckTales (1987) used by Gyro for traveling to different time periods, as well as for sending Scrooge and the others to different time periods.