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Curt Swan

DC Mar 1960

Action Comics #262

Action Comics #262
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Introduction of the concept that Kryptonians derive their powers from Earth's yellow sun
Introduction of the concept that Kryptonians are as powerful as ordinary humans under their native planet's red sun
DC Oct 1960

Superman #140

Superman #140
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Debut of Blue Kryptonite, provides Bizarro with immense power to the point of combustion
1st team appearance of the Bizarro Family
1st appearance of Bizarro Supergirl
Origin of Bizarro Jr.
DC Nov 1960

Superman #141

Superman #141
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1st appearance and death of Lyla Lerrol, a ryptonian love of Superman
Origin of Superman retold
Superman returns to Krypton
DC Apr 1961

Action Comics #275

Action Comics #275
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$18
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$180
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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
DC May 1961

Action Comics #276

Action Comics #276
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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

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