Actor Allusion: The narrator of the Mr. Toad segment, Basil Rathbone, mentions Sherlock Holmes as one of many possible nominees for the most fabulous character in English literature. This is taken a step further by Ratty, who wears a deerstalker cap and a coat very similar to Holmes' trademark garb, and Moley could pass very easily in appearance as an animal Watson.
Hey, It's That Voice!: Mr. Toad is voiced by Eric Blore. Who was then well-known for playing Jamison the Butler in the "Lone Wolf" series of films (1940-1947). Basically the right-hand-man to the popular character Michael Lanyard, Lone Wolf.
Bing Crosby narrates the Sleepy Hollow segment, as well as providing the voices of both Ichabod and Brom, And the Headless Horseman.
The Prosecutor in Toad's trial is voiced by John McLeish, the narrator for the Goofy "How-To" shorts.
What Could Have Been: If WWII hadn't swallowed up so much of Disney's workforce they would've developed these shorts into two full-length features rather than truncate them into their current form. The Mr Toad section of the movie was originally going to be much different - for one thing, the jailer's daughter was the one who gave Toad his female disguise instead of Cyril. For more information, see article here.
When the narrator mentions “christian charity” in regards to Mole and Rat, it not only foreshadows their role in Mickey's Christmas Carol, it might also be the only outright religious reference in a Disney Animated Classic.
Of the characters referenced by Basil Rathbone during the movie's introduction, 4 of them would be the subjects for future Disney Animated Classics, Becky Sharp being the only exception.
Among the American characters Bing Crosby mentions during Ichabod Crane's introduction were Paul Bunyan, Pecos Bill, Johnny Appleseed, Black Bart, Davy Crockett and Daniel Boone.