Grimm's Fairy Tales are more morbid and dark than the Disney versions.
Alice in Wonderland was based off of a real girl named Alice Liddell. The relationship between Lewis Carroll and Alice is a very curious one.
Books in the 1860 were written in serial novels. Each week was a new
chapter instalment. Authors like Charles Dickens and Victor Hugo were
paid so long as the chapters kept coming and the readers kept reading.
That's why many of their novels are pretty long winded and ends off with cliffhangers.
Charles Dickens was heavily influenced by Victor Hugo's writing style.
War of Worlds is a commentary on British imperialism and evolution theory.
Despite the fact that Cthulhu was described to be this horrifying monster, he is pretty cute.
1984 was a commentary for the paranoid behaviour people had during the cold war.
Lord of the Rings inspired the creation of the popular roleplaying game, Dungeons and Dragons.
George R.R Martin writes on a DOS machine with a program called WordStar 4.0. Reason being because modern day software has spell check and the little red lines bothers him.
In terms of literature, young adult is a very new genre still, however, it is quickly gaining in popularity.