Pan Books, 1966. Paperback. First published in 1953. Without warning, giant silver ships from deep space appear in the skies above every major city on Earth. Manned by the Overlords, in fifty years, they eliminate ignorance, disease, and poverty. Then this golden age ends--and then the age of Mankind begins.
Pan Books, 1980. Paperback. A Hugo and Nebula Award-winning novel , first published in 1979. Vannemar Morgan's dream of linking Earth with the stars requires a 24,000-mile-high space elevator. But first he must solve a million technical, political, and economic problems while allaying the wrath of God.