The Land of Oz has been a media phenomenon since it was first introduced in 1900 in L. Frank Baum’s book The Wonderful Wizard of Oz. The imaginary world was the setting for the adventures of Dorothy, the little girl from Kansas, but Baum presented it with such richness and detail that it seemed to his readers that it had existed long before Dorothy arrived. That sense of reality only intensified when Oz transcended its original story and became the setting for a whole series of books—but even more when it transcended its original print medium to all other media that spread its influence worldwide.