Journey into Mystery 101 contains 3 stories.  In the lead story, Thor battles Zarrko the Tomorrow Man.  This story features Odin and Loki, and a brief appearance by Thor's fellow Avengers Giant Man, the Wasp and Iron Man.   By Stan Lee and Jack Kirby.  The second story, "The Enemies!" is a short science fiction story plotted by Stan Lee and written and drawn by Larry Lieber.  Finally, there's a Tales of Asgard story, "The Invasion of Asgard!" featuring Thor and Loki as boys!  Also by Lee and Kirby.  A fun issue.