Pretty much anything by Mark Twain. Even the crap because in context it is amazing.
The man who wrote The Adventures of Tom Sawyer (a great book that is racist[although the racism is not central to its purpose]) and The Adventures of Huckelberry Finn(one of the best condemnations of racism in my opinion) also wrote Tom Sawyer abroad (where Tom, Huck, and Jim go on a balloon trip around the world)