SF Encyclopedia Picture Gallery
John W Campbell, Jr. The Ultimate Weapon (New York: Ace Books, 1966) [dos: first appeared October 1936 Amazing as "Uncertainty": pb/Gerald McConnell]
From the collection of Roger Robinson
John W Campbell, Jr. The Ultimate Weapon (New York: Ace Books, 1966) [dos: first appeared October 1936 Amazing as "Uncertainty": pb/Gerald McConnell]
From the collection of Roger Robinson