 In 1966, the Dallas Cowboys, who had been founded six years earlier, adopted the practice of hosting Thanksgiving games.It is widely rumored that the Cowboys sought a guarantee that they would regularly host Thanksgiving games as a condition of their very first one (since games on days other than Sunday were uncommon at the time and thus high attendance was not a certainty).This is only partly true; Dallas had in fact decided to host games on Thanksgiving by their own decision because there was nothing else to do or watch on that day.