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(2)

Variants

(2)
  1. “Thompson’s Time-Traveling Theory,” as by Mortimer Weisinger, Fantasy Magazine, January 1937.
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Mort Weisinger as by Mortimer Weisinger
  2. alternate title.“Thompson’s Time Traveling Theory” by Mort Weisinger, Amazing Stories, March 1944.
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Mort Weisinger