鋼鉄都市
Berkey made his mark in science fiction publishing with his cover art for Ballantine Books' 1972 reprint of the "STAR Science Fiction" series. Following this success, he went on to design a large number of book covers including works by Isaac Asimov, Ben Bova, Philip K. Dick, Robert Heinlein, Glen Cook and many more. For the 1972 edition of Asimov's novel, "The Caves of Steel", Berkey's cover art featured a self-portrait with his arm showing exposed cybernetic mechanics.