Autor: Arthur J. Burks

Ray Cummings, Sewell Peaslee Wright, Arthur J. Burks, Charles Willard Diffin, R. F. Starzl

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

Sewell Peaslee Wright, Captain S. P. Meek, Arthur J. Burks, Murray Leinster, Charles Willard Diffin, Harl Vincent, Tom Curry

Ray Cummings, Captain S. P. Meek, Arthur J. Burks, Thomas H. Knight, Anthony Pelcher, Tom Curry

Miles J. Breuer, Ray Cummings, Sewell Peaslee Wright, Paul Ernst, Hugh B. Cave, Captain S. P. Meek, Arthur J. Burks