* **H. G. Wells** — *The Time Machine* (1895) *Anchor text for “Time Travel Etiquette” entries.* * **Mark Twain** — *A Connecticut Yankee in King Arthur’s Court* (1889) *Industrialization meets medieval myth; handbook material galore.* * **Edward Page Mitchell** — “The Clock that Went Backward” (1881, short story) *Early time-travel conceit; tight and quotable.* * **William Hope Hodgson** — *The House on the Borderland* (1908) *Cosmic timescales; great for “Don’t Panic” sidebars about eternity.*