0 work produced by an artist when he or she was young, especially when it is published or known only after the artist has become famous later: --
Available juvenilia show her to be an avid writer since age twelve, keeping a cahier de style and publishing her first short stories in a local paper.
Greenya summarised that the novel was far more than literary juvenilia.
There are also numerous unpublished works, sketches and juvenilia.
I find that kind of juvenilia incredible.
The unpublished material incorporates juvenilia from the 1940s and 1950s.