Creepy vintage postcard. Found at Design Squish:

Vintage ad with creepy clown (there is no other kind of clown, IMHO):

Creepy twin toddlers selling tobacco. Vintage ad found at Community LiveJournal:

Creepy guy in a jumpsuit. Ad found at Hub Pages:

Creepy kid with a gun in his underwear. Vintage ad found at Always the Sea:

Creepy snack-head woman. Vintage ad found at Roadside Pictures:

Creepy air travel ad. Found at kokosbolla:

Click here to see a vintage ad with a very creepy headline.