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Key Facts
3rd appearance of the Legion of Super-Heroes
First meeting of the Legion and Supergirl
1st appearance of Chameleon Boy
1st appearance of Invisible Kid
1st appearance of Colossal Boy
Key Facts
3rd appearance of the Legion of Super-Heroes
First meeting of the Legion and Supergirl
1st appearance of Chameleon Boy
1st appearance of Invisible Kid
1st appearance of Colossal Boy
Key Facts
First mention of Superman's Heat Vision power - previous issues demonstrated his X-Ray vision having powers to melt glaciers
Debut of Red/Green Kryptonite - causes mutations including an extra eye on the back of Superman's head
Key Facts
First mention of Superman's Heat Vision power - previous issues demonstrated his X-Ray vision having powers to melt glaciers
Debut of Red/Green Kryptonite - causes mutations including an extra eye on the back of Superman's head
Key Facts
1st appearance of Sun Boy, a solar-powered member of the Legion of Super-Heroes
1st appearance of Phantom Girl, a member of the Legion of Super-Heroes who has the ability to phase through objects
1st appearance of Triplicate Girl, a member of the Legion of Super-Heroes who can split into three identical bodies
1st appearance of Bouncing Boy, a density-changing member of the Legion of Super-Heroes
1st appearance of Shrinking Violet, a member of the Legion of Super-Heroes who can shrink to sub-atomic size
1st appearance of Braniac 5, a genius and time-traveling member of the Legion of Super-Heroes
Supergirl joins the Legion of Super-Heroes
Key Facts
1st appearance of Sun Boy, a solar-powered member of the Legion of Super-Heroes
1st appearance of Phantom Girl, a member of the Legion of Super-Heroes who has the ability to phase through objects
1st appearance of Triplicate Girl, a member of the Legion of Super-Heroes who can split into three identical bodies
1st appearance of Bouncing Boy, a density-changing member of the Legion of Super-Heroes
1st appearance of Shrinking Violet, a member of the Legion of Super-Heroes who can shrink to sub-atomic size
1st appearance of Braniac 5, a genius and time-traveling member of the Legion of Super-Heroes
Supergirl joins the Legion of Super-Heroes
Key Facts
1st appearance of Lesla-Lar, a Kryptonian who escaped from the bottled city of Kandor
Key Facts
1st appearance of Lesla-Lar, a Kryptonian who escaped from the bottled city of Kandor
Key Facts
Supergirl is introduced to the world
Classic cover art by Curt Swan
Key Facts
Supergirl is introduced to the world
Classic cover art by Curt Swan
Key Facts
1st appearance of Luma Lunai, an alien woman whose powers would not function under the yellow sun of Earth
In the story where Supergirl attempts to find a wife for Superman, he discloses to here that he would marry her if Earth's laws allowed cousins to be wed - tap cover and swipe to view panel
Key Facts
1st appearance of Luma Lunai, an alien woman whose powers would not function under the yellow sun of Earth
In the story where Supergirl attempts to find a wife for Superman, he discloses to here that he would marry her if Earth's laws allowed cousins to be wed - tap cover and swipe to view panel
Key Facts
First meeting of Supergirl and Mr. Mxyzptlk
Key Facts
Origin of Comet the Superhorse
Key Facts
Milestone issue Action Comics issue #300
Key Facts
1st appearance of the Black Flame, Zora Vi-Lar, a criminal from Krypton
Key Facts
1st appearance of the Black Flame, Zora Vi-Lar, a criminal from Krypton
Key Facts
Appearance of President John F. Kennedy who had been assassinated days before the issue went on sale
The mystery masquerader on the cover is JFK in disguise to help Superman conceal his identity
Key Facts
Appearance of President John F. Kennedy who had been assassinated days before the issue went on sale
The mystery masquerader on the cover is JFK in disguise to help Superman conceal his identity
Key Facts
Debut of Jewel Kryptonite
Enhances the mental abilities of criminals trapped inside the Phantom Zone to affect events throughout the universe
Key Facts
Debut of Jewel Kryptonite
Enhances the mental abilities of criminals trapped inside the Phantom Zone to affect events throughout the universe
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