In 1893, Data overheard Clemens remark to a reporter that his idea of a Yankee time traveler wasn’t as farfetched an idea as he once thought, having encountered people in San Francisco who were from the future. The reporter thought Clemens was writing a sequel to his time-travel novel. (TNG episode: "Time's Arrow")
In 2372, Lwaxana Troi ran a holosuite program in Quark's Bar of King Arthur’s Court. Being in a depressed state, she described the court as “love betrayed, dreams shattered.” (DS9 episode: "The Muse")
In 2376, in a holodeck recreation of Ireland, Kathryn Janeway gave Michael Sullivan a copy of the novel. She said it was partly about people from different time periods who become lovers. (VOY episode: "Spirit Folk")
- TNG episode: "Time's Arrow"
- DS9 episode: "The Muse"
- TOS novel: Shadow Lord
- TOS novel: Best Destiny
- TOS novel: The Joy Machine
- TOS novel: The New Voyages (introduction)