eBook 21 – Should the Left Arm be Straight in the Back Swing? – November 20152015-12-082020-10-16https://www.peterthompsongolf.com/wp-content/uploads/2020/02/ptg-logo-new-bk-600.pngPeter Thompson Golfhttps://www.peterthompsongolf.com/wp-content/uploads/2020/02/ptg-logo-new-bk-600.png200px200px