The era of Journey Into Mystery (JIM) spanning issues #83 to #107 (1962–1964) represents the foundational period of the Silver Age Thor, transitioning the series from a science-fiction anthology into a superhero powerhouse.
The "frail" human alter-ego who discovers a gnarled cane in a cave that transforms into the hammer Mjolnir.
Created by Stan Lee, Larry Lieber, and Jack Kirby.
Following the debut, the series rapidly built out the Asgardian supporting cast and rogue's gallery: Journey Into Mystery #107:When The Gray Gargoyle Strikes
This run begins with the landmark (August 1962), which introduces:
Rock-like aliens from Saturn (including a character later known as Korg ) who serve as Thor's first modern adversaries.
A critical Silver Age weakness where Thor reverts to Donald Blake if separated from his hammer for more than one minute. 2. Expansion of the Mythos (Issues #84–#107)