By Philip K. Dick, C. H. Thames, Mack Reynolds, Alfred Coppel, Winston Marks, Edmond Hamilton, Milton Lesser, Daniel F. Galouye, Boyd Ellanby, Russ Winterbotham, Kris Neville, Robert E. Gilbert, Morris Hershman, Paul W. Fairman, Robert W. Haseltine, Arnold Marmor, Irving Cox, Jr., Tom W. Harris, Harry Warner, Jr., Dick Purcell, T. D. Hamm, Charles V. De Vet, Alexander Blade