Paul, I know the one you mean. The tune goes something like this.

g c c a c dd ba g / cc c a cc d / cc c a cc dd ba g/ aa a Bb a f dd f a f d/ aa a Bb a f dd f g/

John Hardy was a desparate little man Carried a razor every day Killed a man down on the West Virginia line Oughta' seen John Hardy gettin' away, Lord Lord Oughta' seen John Hardy gettin' away.

I think it's in Lomax's "Folk Song U.S.A."

BTW, Woody sang this tune also with a different set of chords but the last line was ended in major like the tune he used for "Tom Joad."

Frank Hamilton