What fun to revisit an old favorite! I had forgotten amounts of it, despite the fact that I've read it at least two or three times, but it's been years!
The story, of course, retells the the tales of a young teenager from the Old South rafting down a river (presumably the Mississippi) with his friend, the "niggar" Jim, antes discovers friendship and trust and caring where it wasn't expected in the Old South. The tender but thrilling story with lots of adventure and twists! I remembered why I like the story so well :-)