Young adult fiction is fiction written for readers from 12 to 18 years of age. The term YA was first used regularly in the 1960s in the United States. The YA category includes most of the genres found in adult fiction, with themes that include friendship, sexuality, drugs and alcohol, and sexual and gender identity. Wikipedia
Alice's Adventures in Wonderland
Lewis Carroll
Peter Pan
J. M. Barrie
Winnie-the-Pooh
A. A. Milne