I interviewed both Stan Lee and Gil Kane -- and so many others -- for "Comics: Between the Panels."
Stan claimed, "In those (early) days, you would buy a book according to what cover appealed to you the most. You had to make your covers stand out. On every cover, I made up the title, I wrote the cover blurbs, and I designed the cover."
I had to ask: Every cover?
"The monster covers and everything," Stan said. "All the time I was there. For 50 years. Every cover that went through that place went through me. Covers were strictly my area."
Your witness, Gil:
"That happens to be absolutely untrue," Kane said. "I did 900 covers and the only thing that he would say is, 'We need a cover for this.' You would have to submit ideas; after a while, he didn't even get involved in the covers."