Which famous book series was reportedly conceptualized in its entirety during a delayed train journey, becoming a cornerstone of the author's personal brand storytelling?

In the publishing world, brand storytelling goes far beyond the books themselves. Major publishing houses and literary brands often craft compelling narratives about their own origins and values to connect with readers on a deeper level. This trivia question explores one of the most fascinating brand origin stories in modern literature that has become almost as legendary as the books themselves. Test your knowledge of publishing industry lore!

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Harry Potter (J.K. Rowling claimed the entire series came to her during a delayed Manchester-London train in 1990)
The Chronicles of Narnia (C.S. Lewis said the world came to him while staring out a train window in the English countryside)
His Dark Materials (Philip Pullman stated he sketched the parallel worlds concept during a snowbound train in Norway)
The Lord of the Rings (J.R.R. Tolkien reportedly outlined Middle-earth during a tedious overnight train journey to Scotland)