Yes, I had no personal experience obtaining Wackys via Wonderbread Packages, but it has been said that Wackys were inserted ‘naked’ into the loaves without any separate wrapper or other protection, and this is why some Wonderbread Wackies exhibit staining caused by contact with the bread. A more extreme example of this is the 1975-79 Hostess Baseball cards, many of which have really unsightly staining. But given that the snack cakes were typically separately wrapped in pairs or individually, I’ve never been completely clear on how the exposure to oils occurred to begin with, given that the cards were part of the outer box.