Journey into Mystery 111 (December 1964) by Marvel Comics
Loki, the Cobra, and Mr. Hyde are still up to no good in "The Power of Thor!" Script by Stan Lee, pencils by Jack Kirby, inks by Chic Stone. Balder, Jane Foster, and Odin appearances. "Tales of Asgard" back-up: "The Secret of Sigurd!" Script by Lee, pencils by Lee, inks by Vince Colletta. Loki pin-up (Kirby pencils). Kirby/Stone cover.