Here are the records. Check'em out.
Per Game - Season (Minimum 8 Games)
4.8 Ken Hall (Sugar Land, TX),
1953 (57/12)
Thank you, blam! Looks like he's 'only' got a couple of records outright still, but the records changed - from rushing / passing to the total offense theory. It's clear that most if not all of the guys ahead of Mr. Hall now are/were pure quarterbacks who got most of their yards / points passing, while he was tailback in T and single wing days. IOW, he earned every yard and point the hard way...
And look at how long it took them to break his records - mostly 45-50 years.