"The Golden Key" is most like MacDonald's two long fantasy tales for adults, Phantastes and Lilith However, MacDonald did write numerous other stories for young readers. The most notable of these are At the Back of the North Wind, in which the North Wind takes a boy for rides to teach him about life beyond death, "The Light Princess," in which a girl loses her gravity until a wandering prince breaks the spell and gives her back her weight, and the Curdie books (The Princess and the Goblin and The Princess and Curdie), in which a miner's son receives supernatural aid as he protects the Princess from goblins and her father from disloyal servants.