* CameoProp: Baum died before MGM's version of ''Film/TheWizardOfOz'' was filmed, but, in a remarkable coincidence, his coat played a role in the movie. The studio wardrobe department had trouble getting just the right look for Frank Morgan's "Professor Marvel". Finally, they went to a nearby thrift shop and bought an old, shabby frock coat for him to wear. While on the set, Morgan turned out the pocket of the coat, and noticed a name tag of the previous owner: L. Frank Baum. (This was later [[http://www.snopes.com/movies/films/ozcoat.asp confirmed]] by Baum's widow and the tailor that made the coat.) Amusingly, when Margaret Hamilton first heard about it, she initially refused to believe it, claiming it to be nothing more than an MGM-concocted rumor to drum up publicity for the movie.
* CreatorBacklash: While he didn't exactly ''hate'' the [[Literature/TheWonderfulWizardOfOz book that made him famous]], he was disappointed that none of his other literary attempts were anywhere near as successful, forcing him to continue writing Oz sequels [[MoneyDearBoy for the money]]. He tried several times to end the series (for instance, by having Oz be permanently cut off from communication the outside world), but the public would have none of it.