[robw1959]

I originally postulated that the early caramel cards were normally inserted into candy packages much in the same manner that Topps inserted their sports cards into bubble gum packages chiefly because of the caramel staining that is so common on these cards.

Now the Black Swamp cards are an entirely different topic, and obviously received a caramel-free treatment from issue to distribution.

Thanks to all who have chimed in so far. I was hoping somebody would have an early caramel candy container for reference, much like we still have those early tobacco packs in circulation today.