These are in no particular order, but I did try to put the very oldest ones first.
"There is witchery in candy"
For all those severed arteries you'll incur while carving jack-o-lanterns
It helps pool the dripping blood
the Dionne quintuplets
A weeny witch party!
Heck, I've been to a few of those in Hollywood...
Nothing says Halloween like a pumpkin made of Jell-O (1952 ad)
Enough sugar in two quarts to kill a dozen kids
Does anybody remember Fizzies? It was kinda like Alka-Seltzer, with a sweet twist. When I was a kid, you didn't need to add sugar to Fizzies. It was already in the tablet. This must be an older ad.
If Aunt Jenny's cake is anything like the Halloween cake that Alice B. Toklas made, I'll take it!