Plane angle article from Golf Illustrated

[armourall]

If I'm thinking of the same article, it's by Tom Stickney, GSED. I have the original issue (from 2003) sitting in my desk drawer. In the article, he also gives examples of which players use certain plane shift variations.

EDIT:
Just checked and it's not the Stickney article. The article is by Dave Collins. In the article he does credit Homer Kelley, but also states that he does not teach using the Golfing Machine.