Variants

(1)
  1. The Universe Maker by A. E. van Vogt, in Ace Double D-031, The Universe Maker / The World of Null-A by A. E. van Vogt (Ace Books, October 1953).
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by A. E. van Vogt