SPIDER-MAN's Greatest Mystery: How AMAZING FANTASY #15's Original Art Ended Up in the Library of Congress

Who didn't do it - but which co-creator gave their approval.

via The Nerd Machine

https://www.newsarama.com/43804-spider-man-s-greatest-mystery-how-the-amazing-fantasy-15-original-art-ended-up-in-the-library-of-congress.html