Main article: Superman Vol 1 146 Superman of Earth-One attempted to travel into his own universe's past to change the worst tragedies in history. Unbeknownst to the Man of Steel, a "time-trap" in the Timestream sent him into the past of Earth-146. On Earth-One, time travelers were unable to alter history in any significant way, but they could on this twin universe, where different laws of physics were in effect. Superman discovered that his tampering with that reality's history created cosmic disturbances that could unleash unknown dangers on both universes if he ever returned.
- John Wilkes Booth
- George Armstrong Custer
- Lyla Lerrol
- Abraham Lincoln
- Mary Todd Lincoln
- The parallel was only named a twin universe in the story, but identified as Earth-146 in Crisis on Infinite Earths: Absolute Edition.
- The worst tragedies in the history of the world are apparently:
- Characters from Earth-146
- Other things related to Earth-146
- Earth-146's Comic Appearances
- Reality Gallery: Earth-146
Links and References