Mike Mazurki, who played Big Foot Mason, was a former professional wrestler, giving his "no holds barred" fistfight against Davy Crockett a bit of extra realism.
When the three Disneyland episodes about Davy Crockett were edited into a single theatrical feature film, this episode was almost entirely ignored, likely owing to it having far less action than the other installments.
Shots of Nashville and Washington, DC as they appeared in the early 19th century were achieved via the use of elaborate matte paintings.
Despite the title "Davy Crockett Goes to Congress," Davy Crockett does not actually go to congress until about 35 minutes into the roughly 47 minute run time.
Davy is given a commemorative rifle in Philadelphia, which he announces he will name "Betsy." Betsy is a shortened form of Elizabeth, which was the name of the real life Davy Crockett's second wife, who is omitted completely from this biopic.