âŠSword in Sheath (1949), and At Swordsâ Point (1954). While working for the science-fiction publisher Gnome Press in the 1950s, she first tried her hand at science fiction, producing Star Manâs Son, 2250 A.D. (1952); it was reprinted in paperback as Daybreakâ2250 A.D. and sold more than a million copies.
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