Incredible Hulk #105 VF 1st App. & origin of the Missing Link

VF (8.0)

1st appearance and origin of the Missing Link

Story by Bill Everett and Roy Thomas
Art by Marie Severin and George Tuska
Cover by Marie Severin and Frank Giacoia

The Hulk throws down with a mysterious creature known only as the Missing Link! What is the origin of this Cro-Magnon menace? And what exactly are Rick Jones and Glenn Talbot up to during all this?