Assignment in Tomorrow

by Frederik Pohl, Theodore Sturgeon, Jerome Bixby, Cyril M. Kornbluth, Ray Bradbury, Lester del Rey, Alfred Bester, Kurt Vonnegut, James H. Schmitz, Jack Williamson, Algis Budrys, H. L. Gold, Richard Wilson, Peter Phillips, Fletcher Pratt, Fredric Brown, Philip José Farmer