It was shared a lot in vintage card groups on FB. I found it amusing - kid clearly has '67 packs at the candy store, and is flipping them on the ground while his sister looks to have been the one likely to have nice cards 50+ years later. In the factory scenes, they show '67 cards but '66 wrappers. I'm guessing it was pieced together over a couple of years.
Neat, but I could have done with more about the cards and less about the bubble gum. I guess Topps back in the day still considered the gum their premiere product...