Actor Allusion: Billy Gilbert voices Willie in the Beanstalk segment, using an over the top sneeze like in many of his comedic routines, including when he voiced Sneezy.
What Could Have Been: Earlier versions of the Beanstalk segment had two versions of where Mickey got the beans. One version has Honest John and Gideon being the tricksters who sell Mickey the beans, while another has Mickey meeting the queen of Happy Valley: Minnie, who gives him the beans.
According to the featurette included on the DVD and on the 1997 VHS and laserdisc, both were originally going to be made into full-length films, with Bongo being a companion piece to Dumbo, to the point where the Elephant Matriarch, Catty, Prissy, and Giddy were to make an appearance. However, when the US entered World War II, the idea was shelved.
Mickey and the Beanstalk was also going to be part of a proposed package feature that would have featured either The Gremlins or The Wind in the Willows. The former would not be made, while the latter ended up being part of The Adventures of Ichabod and Mr. Toad.
Jiminy Cricket's song in this film, "I'm a Happy-Go-Lucky Fellow", was originally created for Pinocchio, but was ultimately not used in that film.