Brittany wrote...
A lot of times artists republish their illustrations from magazine covers in their books :)
For example Napata's You're All Mine had several previous magazine covers as colored images in the beginning of their book and BoBoBo's Fresh Meat had a magazine cover as the inside cover image displaying it without text
Thanks for the heads up about the ones the artists include in their books!
However, it's not the case for every cover illustrations which is too bad. It would be great if FAKKU could release textless and clean versions of magazine covers that aren't in any of the currently sold books.