Their influence on the culture can be far-reaching. The Wonderful Wizard of Oz was first published, to great acclaim, in 1900. Four years later, responding reluctantly to the demands of the novel’s admirers, the author published a sequel, The Marvelous Land of Oz. Baum’s eager, insistent readers would not let him stop there. His publisher released additional sequels in 1907, 1908, 1909, 1911, 1913, and every year thereafter until 1919, when he died.