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Action Comics #243
DC
•
1958
•
Vol. 1
Non-Key
Action Comics #244
DC
•
1958
•
Vol. 1
Non-Key
Action Comics #245
DC
•
1958
•
Vol. 1
Non-Key
Action Comics #246
DC
•
1958
•
Vol. 1
Non-Key
Action Comics #247
DC
•
1958
•
Vol. 1
Non-Key
Action Comics #248
DC
•
1959
•
Vol. 1
Key Facts
1st appearance of Congorilla, formerly Congo Bill
Action Comics #249
DC
•
1958
•
Vol. 1
Non-Key
Action Comics #250
DC
•
1959
•
Vol. 1
Non-Key
Action Comics #251
DC
•
1959
•
Vol. 1
Key Facts
Full page teaser ad of the first appearance of Supergirl in Action Comics #252
Key Facts
Full page teaser ad of the first appearance of Supergirl in Action Comics #252
Action Comics #252
DC
•
1959
•
Vol. 1
Key Facts
1st appearance of Supergirl
1st appearance of Metallo
1st appearance of Zor-El, the father of Supergirl
1st appearance of Allura In-Ze, the mother of Supergirl
Key Facts
1st appearance of Supergirl
1st appearance of Metallo
1st appearance of Zor-El, the father of Supergirl
1st appearance of Allura In-Ze, the mother of Supergirl
Key Facts
Glow in the Dark edition
Action Comics #252
DC
•
2025
•
Vol. 1
Non-Key
Facsimile
Big Time Collectibles
Key Facts
Limited to 3,000 copies
Action Comics #252
DC
•
2025
•
Vol. 1
Non-Key
Facsimile
Big Time Collectibles
Key Facts
Foil edition
Limited to 1,000 copies
Key Facts
Lebanese edition, published as Superman Comics #5
Action Comics #253
DC
•
1959
•
Vol. 1
Key Facts
2nd appearance of Supergirl
Action Comics #254
DC
•
1959
•
Vol. 1
Key Facts
1st appearance and origin of Bizarro #1, an imperfect version of Superman
Key Facts
1st appearance and origin of Bizarro #1, an imperfect version of Superman
Action Comics #255
DC
•
1959
•
Vol. 1
Key Facts
1st appearance of Bizarro Lois Lane
Action Comics #256
DC
•
1959
•
Vol. 1
Key Facts
1st appearance of Dick Wilson, later Dick Malverne, a love interest of Supergirl
Key Facts
1st appearance of Dick Wilson, later Dick Malverne, a love interest of Supergirl
Action Comics #257
DC
•
1959
•
Vol. 1
Non-Key
Action Comics #258
DC
•
1959
•
Vol. 1
Non-Key
Key Facts
2nd cover appearance of Supergirl
Action Comics #259
DC
•
1959
•
Vol. 1
Non-Key
Action Comics #260
DC
•
1959
•
Vol. 1
Non-Key
Action Comics #261
DC
•
1960
•
Vol. 1
Key Facts
1st appearance of Streaky the Supercat
Action Comics #262
DC
•
1960
•
Vol. 1
Key Facts
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
Key Facts
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
Action Comics #263
DC
•
1960
•
Vol. 1
Key Facts
Introduction of Bizarro World
Action Comics #264
DC
•
1960
•
Vol. 1
Non-Key
Action Comics #265
DC
•
1960
•
Vol. 1
Non-Key
Action Comics #266
DC
•
1960
•
Vol. 1
Non-Key
Action Comics #267
DC
•
1960
•
Vol. 1
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
Action Comics #268
DC
•
1960
•
Vol. 1
Non-Key
Action Comics #269
DC
•
1960
•
Vol. 1
Non-Key
Action Comics #270
DC
•
1960
•
Vol. 1
Non-Key
Action Comics #271
DC
•
1960
•
Vol. 1
Non-Key
Action Comics #272
DC
•
1960
•
Vol. 1
Non-Key
Action Comics #273
DC
•
1960
•
Vol. 1
Non-Key
Action Comics #274
DC
•
1961
•
Vol. 1
Non-Key
Action Comics #275
DC
•
1961
•
Vol. 1
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
Action Comics #276
DC
•
1961
•
Vol. 1
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
Action Comics #277
DC
•
1961
•
Vol. 1
Non-Key
Action Comics #278
DC
•
1961
•
Vol. 1
Non-Key
Action Comics #279
DC
•
1961
•
Vol. 1
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
Action Comics #280
DC
•
1961
•
Vol. 1
Non-Key
Action Comics #281
DC
•
1961
•
Vol. 1
Non-Key
Action Comics #282
DC
•
1961
•
Vol. 1
Non-Key
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