Introduction: Why Historicise? Part I: Defining Transmedia History 1. Characterising Transmedia Storytelling: Character-Building, World-Building, Authorship 2. Contextualising Transmedia Storytelling: Industrialisation, Consumer Culture, Media Regulation Part II: Exploring Transmedia History 3. 1900–1918, From Fin-de-siècle to Fairy-Worlds: L. Frank Baum, the Land of Oz & Advertising 4. 1918–1938, From Fairy-Worlds to Jungles: Edgar Rice Burroughs Inc., Tarzan & Corporate Authorship 5. 1938–1958, From Jungles to Krypton: DC Comics, Superman & Industry Partnerships Conclusion: Cross the Shifting Sands