Dard Nordis grew up in a world that had been devastated by atomic
catastrophe. The remnants of humanity had set up an iron dictatorship
to hunt out and destroy the last free bands of scientists, hiding in
mountains and caves. And the day came when Dard's secret laboratory
home was raided - and he escaped by the skin of his teeth.
Where else could men go to keep the torch of liberty and knowlkedge burning? Dard's martyred brother had given him a key to that unknown haven, but how could dard learn to use it? Where were the engineers and their spaceships hidden?
Andre Alice Norton (1912-2005) was an American science fiction and fantasy author (with some works of historical fiction and contemporary fiction) under the noms de plume Andre Norton, Andrew North and Allen Weston. Norton published her first novel in 1934, and was the first woman to receive the Gandalf Grand Master Award from the World Science Fiction Society in 1977, and won the Damon Knight Memorial Grand Master Award from the Science Fiction and Fantasy Writers of America (SFWA) association in 1983.
Andre Norton. Wikipedia.