Autor: Harold Thompson Rich

Ray Cummings, Jack Williamson, Harry Bates, Harold Thompson Rich, Nat Schachner, Arthur L. Zagat, A. R. Holmes

Sewell Peaslee Wright, Murray Leinster, Hal K. Wells, Charles Willard Diffin, Harold Thompson Rich

Arthur J. Burks, Murray Leinster, Harl Vincent, Victor Rousseau, Edmond Hamilton, R. F. Starzl, Harold Thompson Rich