Treasure Island and The EbbTide by Robert Louis Stevenson... 9780141199146

In quotTreasure Islandquot a weathered old sailor known as Billy Bones arrives at the inn of young Jim Hawkins parents and it is the start of an adventure beyond anything he could have imagined For when Bones dies mysteriously Jim stumbles across a map of mysterious island in his sea chest where X marks the spot of a stash of buried pirate gold