With the research of German-language children's and youth literature and its media associations in the period from 1900 to 1945 as well as the recording of all data in an online portal for research and visual analysis, an innovative contribution to the historiography of children's and youth literature is available. The introduction provides information on the criteria for inclusion, central sources, theoretical frameworks, and the spectrum of the media associations investigated. Part I assembles three overview articles on the media of radio, film and theater for children and young people as well as a contribution on the conception and development of the online portal. In the second part, 18 selected media alliances are presented, sorted into the categories pioneers conquer the new media - stage children migrate to radio and/or film - fairy tales in film and radio - classics in all media - school stories in the theater, book and on the screen - crime and scandal on the screen - political conquers book and film.

Preface.- Introduction.- I Overview articles.- Children's and youth radio from 1900 to 1945.- Children's and youth film from 1900 to 1945.- Children's and youth theater from 1900 to 1945.- Digital explorations of historical media networks. Basic outlines of portal development in interdisciplinary perspective.- II Pioneers conquer the new media.- From children's theater to film. Media convergence in the early work of Fritz Genschow and Renée Stobrawa.- Mickey Mouse. An (Ur-)American character in 1930s Germany.- Funkheinzelmann. The multimedia career of a radio character.- III Stage children migrate to radio and/or film.- Once to the moon and back. Peter's moon ride and his media journey.- In Never Never Land. How Peter Pan made book, theater and film history.- Urians Weltreise. Motif history and media adaptations.- IV Fairy tales in film and radio.- "That was a splendid fairy tale!" The Flying Suitcase by H. C. Andersen in the media network.- Mutabor! Art fairy tales by Wilhelm Hauff in media transfer.- V Classics in all media.- Max und Moritz across the media. And especially in the comic strip.- Robinsonades between 1900 and 1945. From the silent film classic to the radio Robinson.- VI School stories in the theater, book and on the screen.- Beyond Romy and Lilli. Christa Winsloe's retirement story and its forms of presentation in the media.- Traumulus. From naturalistic drama to Nazi film adaptation.- "Da stelle ma uns mal janz dumm" Die Feuerzangenbowle - eine Medienverbundanalyse.- VII Verbrechen und scandalöses auf der Leinwand.- Emotionalisierung zwischen Sexualität, Generationenkonflikt und Machtdiskurs. The Steglitz school tragedy as a media network.- The genre system of the early screen detectives. On the media alliances around Sherlock Holmes, Nick Carter, Stuart Webbs, and Joe Deebs.- "By golly, that's famos" Media mobilization in the Nazi girls' film Was tun, Sibylle?.- VIII Political conquers book and film.- Pacifist anti-war films of the pre-fascistera. The media network around Im Westen nichts Neues.- Boyish Romanticism in a Timeless Idyll? Depoliticizing entertainment using the example of Alfred Weidenmann's Jakko.