[Yoda]

I have "Play your best golf" but not the other book. I will pick that one up.

There are many gems in Tommy Armour's book. And since the book remains true to its title How To PLAY Your Best Golf All the Time [Emphasis added], not all of them relate to the Golf Stroke itself. However, there also are a few pitfalls:

1. Be sure to interpret his Swinger's 'Right Hand Hell-Whacking' as the Right Forearm and #3 Pressure sensing Clubhead Lag Pressure and Acceleration -- a very strong correct sensation -- not as a Right Wrist Flattening through Impact ('False Feel' Wrist Action and Throwaway per 6-D-0).

2. Do not overdo the Knee Motion idea (on either the Backstroke or the Downstroke). [You won't if you use the illustrations as a guide.] The Knees and Feet 'anchor' the Stroke. They do move, but only to the extent required to support the motion of the Hips. Their principal function is to keep the Head steady and mantain Balance (two of the Three Essentials).

3. The recommended Grip is a bit '10-2-D-ish' (Left Hand Turned, not Vertical), but not exaggerated. If you've got to err, that's the side to err on. Just be sure to heed the advice and illustration of the Double Cocked Wrist Action at the Top (10-18-B / Cocked and Bent).