A Connecticut Yankee In King Arthur's Court was published in 1899, marking the end of Twain's most productive period, during which he wrote Tom Sawyer and Huck Finn. This novel marks a transitional period for Twain, straddling satire and the kind of serious subject matter that would mark later works like The Mysterious Stranger.
Students might also be interested in other 19th and early-20th century works science fiction, such as H.G. Wells's The Time Machine.