juvenilia
noun [ U or plural ] uk/ˌdʒuː.vəˈnɪl.i.ə/ /ˌdʒuː.vəˈnɪl.i.ə/
（艺术家成名之后出版或被发现的）少年时期作品
work produced by an artist when he or she was young, which is usually published or known only after the artist has become famous later
The archive covers the author's entire literary and professional life, from her earliest juvenilia to her final lectures and articles. 档案材料覆盖了作者的整个创作生涯，从她早期的少年时代作品到最后的讲座和文章等。