An American science fiction author, he’s particularly known for his Terro-Human Upcoming History series. He’s also the writer from the shorter Paratime series. Before you begin his literary profession, he worked being a evening watchman to get a Pa railroad. A common theme in his function is the notion of background duplicating itself. He was raised near Altoona, Pa. He dedicated suicide in 1964. He and Jack port Williamson had been both influential research fiction writers.