Jack Kirby: Two-Gun Kid #58 - February 1961

Feb. 1961: Two-Gun Kid #58

Jack Kirby: Journey Into Mystery #65 - February 1961

Feb. 1961: Journey Into Mystery #65

Thor! Er, Thorr...Jack Kirby: Tales to Astonish #16 - February 1961

Feb. 1961: Tales to Astonish #16

Catchy name, huh? And of course a year and a half later we'd get this: 

Aug. 1962: Journey Into Mystery #83

And now it can be told
The infamous last panel of JiM #83--long thought to be a simple spelling mistake--in fact refers to the Astonish Thorr!

😉😉😉😉😉😉😉😉

Jack Kirby: Tales of Suspense #14 - February 1961

Feb. 1961: Tales of Suspense #14

Jack Kirby: Strange Tales #81 - February 1961

Feb. 1961: Strange Tales #81

A few years later Stan and Don Heck created an Iron Man antagonist called--you guessed it--the Scarecrow. Here's the cover by Kirby: 

March 1964: Tales of Suspense #51

Jack Kirby: Rawhide Kid #20 - February 1961

Feb. 1961: Rawhide Kid #20

Jack Kirby: Love Romances #91 - January 1961

Kirby drew the woman in the background (and per the GCD, possibly the cover's composition). 

Jan. 1961: Love Romances #91

Jack Kirby: Journey Into Mystery #64 - January 1961

Jan. 1961: Journey Into Mystery #64

Jack Kirby: Gunsmoke Western #62 - January 1961

Jan. 1961: Gunsmoke Western #62

Jack Kirby: Tales to Astonish #15 - January 1961

Jan. 1961: Tales to Astonish #15

Jack Kirby: Tales of Suspense #13 - January 1961

Jan. 1961: Tales of Suspense #13

Lee and Ditko's Electro (diff. spelling) a few years later. 

Feb. 1964: Amazing Spider-Man #9

Jack Kirby: Strange Tales #80 - January 1961

Jan. 1961: Strange Tales #80