I remember re-reading that one recently. Jack Kirby did the whole issue, art and script. He's much kinder to Stan in this than he would be in later years.
I think my brother still has the original but it's also included in a What If TPB I have. It's always amazing to see the amount of work Kirby did per month. He also helped launch Not Brand Echh and as I recall Marie Severin worked on the art a lot for that title too.
Not entirely on topic but I was watching the season finale of The Gifted last night and the old auto yard they were passing was J Kirby's. I got a little emotional, I can't deny it.