This section is from the book "Hints To Golfers", by O. K. Niblick. Also available from Amazon: Hints To Golfers.
(1) Stand well over the ball but not so close that the sole of the putter is not squarely on the ground, standing with the body, head and ball in the same vertical plane, the feet far enough apart to give a firm stance, the knees a little bent, the left foot well in front of the ball and pointing towards the hole, the right foot close to the ball and pointing towards it.

(2) Grasp the club well down the leather, the same as when playing a stiff arm approach shot except that the right thumb is held down the shaft and the club held tight enough not to allow the shaft to turn with the concussion, holding the shaft, if anything, more with the left hand than with the right, some players overlapping or interlocking the left hand with the right in order to have one fulcrum for the swing.

(3) Hold the shaft with the hands opposite the centre of the body so that both arms will work alike and together. With the backward swing carry the club head along the ground without any movement of the body. As the stroke is made wholly with the arms, the wrists should be stiff and taut, the left elbow squared to the hole so that the left arm may swing freely in front of the body and the right elbow bent enough to give freedom of motion to the right arm.
(4) With the backward swing, let the movement be deliberate, lengthening out the arms enough to keep the club head close to the ground. At the end of the backward swing pause a moment to prevent any jerk in the forward swing. By pushing well back with the backward swing there will be less strength necessary with the forward swing and the tendency to jerky, catchy hitting will be partly prevented, which in long putts is especially important.
(5) With the forward swing, the club should be pulled forward rather than swung, both knees knuckling towards the hole to help the forward movement but in no other way should there be any movement of the body.
(6) With the concussion the club head should rise slightly so that a forward spin will be given the ball which has the great merit of making the ball run true.
 
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