I topolini riconoscenti [The Grateful Mice] (Arturo Ambrosio, 1908)
Read my review and watch the complete film, with a new soundtrack, at: https://www.acinemahistory.com/2022/10/i-topolini-riconoscenti-1908-grateful.html
One of the first Italian cinema adaptation of a fairy tale and probably the first film to use an heterodiegetic narrator to present the scenes of the film as pages of a book.