Note: The image here links to a cheap paperback copy of Treasure Island. If you want an ebook version, you can download it for free from Project Gutenberg.
I am currently reading Robert Louis Stevenson's Treasure Island for the first time since probably middle school. I'd forgotten much of the story - most of what I knew about it was from Disney's Treasure Planet (one of my favorite Disney animated movies), as sad as that may seem.
I knew that Treasure Planet, despite being adapted for a futuristic setting, drew a lot of its characters and elements from Stevenson's novel. I hadn't remembered how much of it had come directly from the novel, though. In fact, most of the book is translated into movie form in some shape or form: the sailing ship becomes a space ship, the island becomes a planet, and the marooned sailor Ben Gunn becomes a crazy robot. The names and places stay the same: the Jim Hawkins and his mother, the Benbow, Billy Bones, Long John Silver, the mutiny, etc.
In other words, anyone who loved the action and adventure of Treasure Planet is bound to enjoy Treasure Island. Robert Louis Stevenson knew what he was doing when he crafted boys' adventure novels, that's for sure!