Classicly

Treasure Island: the sensationally popular boys' tale by Robert Louis Stevenson. It is narrated by young Jim Hawkins, son of an innkeeper who sets sail on a schooner headed for a remote Caribbean island. So many classic pirate trappings and names come from the mutiny and adventure that ensues: Long John Silver with a parrot on his shoulder, the treasure map with the "X", the "Black Spot," and Davey Jones' Locker.

One interesting note was that the book actually began as a treasure map, one which Stevenson had illustrated for fun but had delighted him so much that he wrote the rest of the novel around it. Sadly, when Stevenson sent the map to his publisher along with the novel, it was lost. He was devastated, and when he tried to redraw it from memory it was a sorry attempt. So after all these years there is treasure after all... and it's the map itself: find Stevenson's map!