Published: May 1983
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When Superman accidentally exposes himself to kryptonite, he recalls his lifetime of experience with the mineral from his home planet.
Superman loses his memory and becomes a baseball star.
While rescuing a bathyscaph from the ocean bottom where it rests next to a Red Kryptonite meteor, Superman remembers all the other times that Red Kryptonite has affected him.
Flashbacks to many Superboy and Superman red kryptonite stories.
The Bizarros celebrate when their world is invaded by animated blue kryptonite statues, until the invaders try to make it round again.
This story takes place on Christmas Eve and Christmas Day. Christmas on Bizarro World is celebrated on July 4th.
Superboy visits the 50th century where everyone considers him to be just a legend.
First appearance of white kryptonite.
Jax-Ur tricks Superman into releasing him from the Phantom Zone to save the people of Atlantis from a plague. He then uses the opportunity to create Jewel Kryptonite, which allows the Phantom Zone prisoners to focus their thoughts to affect the outside world.
First appearance of jewel kryptonite.
Inside back cover.
Back cover. The six forms of kryptonite.
Inside front cover.
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