The Copper-Clad World is the story of an earth spaceship hijacked to planet Io. "Something had warned him when they left Earth; the Martian cargo of k metal was of enormous value and a direct invitation to piracy. Of course there was the attempt at secrecy and the shippers had sent along those guards. His engineer, Tom Farley, was thoroughly reliable, too. But this failure of the control rocket tubes, missing their destination as a result there was something queer about it." The Copper-Clad World is packed with adventure Dwarfish aliens, tiger women, man-eating plants, death rays and more! Harl Vincent was a mechanical engineer who began writing in 1928. That year published The Golden Girl of Munan and over the decades after produced over 70 sci-fi stories and novels.