The Dionne Quints were a phenomenon back in the 30's. They were born in 1934 and were the first to survive infancy. They were so popular that they became a tourist draw for Callandar, Ontario and dolls sporting their likeness became a popular novelty.
Even Curtiss Candy cashed in on the craze, running this ad in a 1939 issue of Life Magazine. Rich in dextrose food energy sugar, yum, nothing tastes quite so good on Halloween as quack science for a thinly veiled excuse to eat candy.