This may be too boring for some readers, but I hope you can shed some light on it. I know the Notre Dame Box was a variation of the single-wing in which the left halfback was the tailback or featured passer, the fullback the featured runner, the right halfback more of a blocker/receiver and the quarterback a blocking back. But I look at old Packers rosters and find contradictions. From 1929-31, Red Dunn was the quarterback and a primary passer. In the 1930s, Hank Bruder and Larry Craig were quarterbacks and blocking backs. Arnie Herber was listed as a right halfback, typically not a position to receive a snap.