Indeed, this is educational. In my day, a big flat wad of pink bubble gum came with every pack of baseball cards. And a pack cost a nickel, which was big money - obtained by working stiff kids by returning two empty regular pop bottles at 3 cents each, or one quart pop bottle for 6 cents. I made a lot of money for that time as a kid by picking up and returning beer and pop bottles to grocery stores. Hard to believe now in this throw everything away society that was actually a real thing to do then.