Heinlein worked on “The Green Hills of Earth,” which he had once seen as his “swan song” for Campbell, who had even mentioned it in the magazine. Instead, it was bought by the Post. The sale was a milestone for the entire genre—Asimov was filled with “miserable envy” when he heard about it—but Heinlein was sorry that he hadn’t sent it to his old friend: “I deeply regret that it should have worked out with hurt feelings, for John nursed me along a lot at the beginning.” Even better, his juvenile novel, which would be retitled Rocket Ship Galileo, was acquired for hardcover by Alice Dalgliesh at
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