The Oh Henry! candy bar is a true classic candy bar, containing white fudge, caramel, peanuts, all covered in chocolate. One of the stories of the Oh Henry! bar’s creation was that it was created in Chicago in 1909 by the Williamson Candy Company. Also, one of their first marketing campaigns was the words “Oh Henry!” on a bumper sticker. The tactic worked very well, the bar quickly gained popularity afterward.