While sources may not agree on who created the hamburger, they do concur that it made its debut at the 1904 World's Fair in St. Louis.
One story has it that a vendor on the midway began slapping meat patties onto slices of bread when he ran out of plates. Fair attendees, loving the result, told him to forget the plates.
Another version, however, gives credit to a Texan -- Fletcher Davis, a.k.a. Old Dave -- who, it is said, invented the hamburger at his lunch counter in Athens,