[12 piece bucket]

Hi 12PB, it seems that Lee was quite a literary guy...had a few books out ( and these are just the instructional ones) :

I Can Help Your Game by Lee Trevino (Hardcover - 1 Jan 1972)

Groove Your Golf Swing My Way by Lee Trevino (Hardcover - 1976)

Swing My Way by Lee Trevino and Dom Lupo (Paperback - 27 Sep 1984)

the first one... is not too prescriptive about his personal style...this one is adapting his style to main stream golf...I think some of his other ones may spend more time telling you to do exactly what he did which,like you say, may be tricky for all clubs...the grip in this one is a pretty neutral one...not the strong one you kinda associate with Lee.

I got two of the 3 . . . . I know in the Groove book he wants the face looking left . . . then in the I Can Help he wants the face open . . . .

Bottom line he hit it low so I think he had some issues with the face looking left and had to get the shaft leaning to get it to look more right to avoid hooking it.