the magazine had printed a letter from a fan claiming to review an issue from a year in the future. One of the nonexistent stories was “Gulf,” by Heinlein’s pseudonym Anson MacDonald, and he proposed that if they persuaded the other writers to play along, they could do it for real. Campbell loved the notion, and Heinlein set to work. The title “Gulf” could mean almost anything, and when Heinlein turned to Ginny for suggestions, she proposed a plot about a “Martian Mowgli,” a human orphan raised by aliens on Mars. Heinlein drafted the first and last chapters and asked Campbell for feedback on
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