Mike Sekowsky

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Justice League of America #21

DC • 1963 • Vol. 1
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Justice League of America #21
 
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First meeting of the Justice Society of America and the Justice League of America

First meeting of Green Arrow and Black Canary

First meeting and team-up of Alan Scott, the Golden Age Green Lantern and Hal Jordan, the Silver Age Green Lantern

1st appearance of Dr. Fate and Hourman in the Silver Age

2nd appearance of Chronos

"Crisis on Earth" part 1

Twilight Zone #4

Western • 1963 • Vol. 1
Non-Key
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Twilight Zone #4
 
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Secret Hearts #91

DC • 1963 • Vol. 1
Non-Key
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Secret Hearts #91
 
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Young Romance #126

DC • 1963 • Vol. 1
Non-Key
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Young Romance #126
 
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Justice League of America #23

DC • 1963 • Vol. 1
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Justice League of America #23
 
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1st appearance of Queen Bee, leader of hiveworld Korll

Twilight Zone #5

Western • 1963 • Vol. 1
Non-Key
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Twilight Zone #5
 
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Justice League of America #24

DC • 1963 • Vol. 1
Non-Key
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Justice League of America #24
 
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Twilight Zone #6

Western • 1964 • Vol. 1
Non-Key
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Twilight Zone #6
 
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Justice League of America #25

DC • 1964 • Vol. 1
Non-Key
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Justice League of America #25
 
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Justice League of America #26

DC • 1964 • Vol. 1
Non-Key
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Justice League of America #26
 
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McLintock #0

Western • 1964 • Vol. 1
Non-Key
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McLintock #0
 
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Justice League of America #27

DC • 1964 • Vol. 1
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Justice League of America #27
 
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2nd appearance of Amazo

Justice League of America #28

DC • 1964 • Vol. 1
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Justice League of America #28
 
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2nd appearance of the Tattooed Man, Abel Tarrant

Justice League of America #29

DC • 1964 • Vol. 1
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Justice League of America #29
 
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1st team appearance of the Crime Syndicate of America: Ultraman, Owlman, Power Ring, Super-Woman, Johnny Quick II

First mention of Volthoom, the first Lantern

[November 2023 - an inside source has disclosed to Key Collector Comics that Ultraman will be a villain in Superman Legacy and the Engineer will be working for Lex Luthor]

Justice League of America #30

DC • 1964 • Vol. 1
Non-Key
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Justice League of America #30
 
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JLA and JSA battler their evil doppelgangers from Earth 3, the Crime Syndicate

The Frogmen #10

Dell • 1964 • Vol. 1
Non-Key
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The Frogmen #10
 
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Young Romance #132

DC • 1964 • Vol. 1
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Young Romance #132
 
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Justice League of America #31

DC • 1964 • Vol. 1
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Justice League of America #31
 
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Hawkman joins the Justice League of America

Justice League of America #32

DC • 1964 • Vol. 1
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Justice League of America #32
 
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1st appearance of Brain Storm

Voyage to the Bottom of the Sea #1

Western • 1964 • Vol. 1
Non-Key
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Voyage to the Bottom of the Sea #1
 
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Justice League of America #33

DC • 1965 • Vol. 1
Non-Key
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Justice League of America #33
 
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80-Page Giant Magazine #8

DC • 1965 • Vol. 1
Non-Key
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80-Page Giant Magazine #8
 
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Justice League of America #34

DC • 1965 • Vol. 1
Non-Key
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Justice League of America #34
 
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Falling In Love #74

DC • 1965 • Vol. 1
Non-Key
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Falling In Love #74
 
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Girls' Love Stories #110

DC • 1965 • Vol. 1
Non-Key
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Girls' Love Stories #110
 
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Justice League of America #35

DC • 1965 • Vol. 1
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Justice League of America #35
 
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1st appearance of Dagon - this version of the character are the Demons Three masquerading as Dagon

Justice League of America #36

DC • 1965 • Vol. 1
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Justice League of America #36
 
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Young Love #50

DC • 1965 • Vol. 1
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Young Love #50
 
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Justice League of America #37

DC • 1965 • Vol. 1
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Justice League of America #37
 
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1st appearance of Mr. Terrific in the Silver Age

Justice League of America #38

DC • 1965 • Vol. 1
Non-Key
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Justice League of America #38
 
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The Frogmen #11

Dell • 1965 • Vol. 1
Non-Key
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The Frogmen #11
 
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Justice League of America #40

DC • 1965 • Vol. 1
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Justice League of America #40
 
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Justice League of America #39

DC • 1965 • Vol. 1
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Justice League of America #39
 
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Justice League of America #41

DC • 1965 • Vol. 1
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Justice League of America #41
 
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1st appearance of the Key, a being obsessed with power and unlocking the secrets of the world

T.H.U.N.D.E.R. Agents #2

Tower • 1966 • Vol. 1
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T.H.U.N.D.E.R. Agents #2
 
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Death of Egghead

Astounding Stories #69

Alan Class • 1966 • Vol. 1
Non-Key
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Astounding Stories #69
 
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Justice League of America #42

DC • 1966 • Vol. 1
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Justice League of America #42
 
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Metamorpho joins the Justice League of America as a standby member

Justice League of America #43

DC • 1966 • Vol. 1
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Justice League of America #43
 
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1st team appearance of the Royal Flush Gang: Ace, King, Queen, Jack, Ten of Clubs

Undersea Agent #2

Tower • 1966 • Vol. 1
Non-Key
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Undersea Agent #2
 
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Man from U.N.C.L.E., The #6

Western • 1966 • Vol. 1
Non-Key
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Man from U.N.C.L.E., The #6
 
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Justice League of America #44

DC • 1966 • Vol. 1
Non-Key
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Justice League of America #44
 
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Man from U.N.C.L.E., The #7

Western • 1966 • Vol. 1
Non-Key
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Man from U.N.C.L.E., The #7
 
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Justice League of America #45

DC • 1966 • Vol. 1
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Justice League of America #45
 
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1st appearance of Shaggy Man, a powerful but mindless beast

Undersea Agent #3

Tower • 1966 • Vol. 1
Non-Key
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Undersea Agent #3
 
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Brave and the Bold, The #66

DC • 1966 • Vol. 1
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Brave and the Bold, The #66
 
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1st team up of Metamorpho and Metal Men

Justice League of America #46

DC • 1966 • Vol. 1
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Justice League of America #46
 
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1st appearance of the Sandman, Wesley Dodds in the Silver Age

1st appearance of the Anti-Matter Man, an entity of extreme power from Qward

Classic Story: Crisis Between Earth-One and Earth-Two

Dynamo #1

Tower • 1966 • Vol. 1
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Dynamo #1
 
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First series featuring Dynamo

Brave and the Bold, The #68

DC • 1966 • Vol. 1
Non-Key
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Brave and the Bold, The #68
 
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Justice League of America #49

DC • 1966 • Vol. 1
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Justice League of America #49
 
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Man from U.N.C.L.E., The #10

Western • 1966 • Vol. 1
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Man from U.N.C.L.E., The #10
 
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