Although his character in the film is named Duke Hudkins, John Wayne got his nickname "The Duke" long before. In his early teens living in Glendale, California, Wayne had a dog named Duke. They were so inseparable that family and friends called them Little Duke and Big Duke. For Wayne, who soon entered high school theatrical productions, the name stuck.
$250,000 was spent on advertising and at that time was one of the largest budgets ever used.
The Cactus Milk drink that Molly orders at the saloon, and that almost knocks her out, is made with tequila, triple sec, gin, and, of course, cactus milk.
Final film of Nina Quartero.