In this study, the letters of Ivana Brlić-Mažuranić addressed to Milan Šević are published for the first time. From this material, it is clear that Milan Šević asked Ivana Brlić-Mažuranić for the letters of Jovan Jovanović Zmaj, and for her own biographical data, and that he planned to publish in Cyrillic script Croatian Tales of Long Ago, or some of her other literary writings. Šević`s view that children’s literature should be established on its own and become an independent fictional genre (Šević used to call it “differentiation”) obtained its approval in the creative work of Ivana Brlić-Mažuranić. The letters of Ivana Brlić-Mažuranić repeat facts and details noted earlier in her autobiography, treating her own poetry collection Slike [Im...