http://www.amazon.com/Homer-Kelleys-.../dp/1592405533 In 1939, Homer Kelley played golf for the first time and scored 116. Frustrated, he did not play again for six months; when he did he carded a 77. Determined to understand why he was able to shave nearly 40 strokes off his score, Kelley spent three decades of trial and error to unlock the answer and to recapture that one wonderful day when golf was easy and enjoyable. In 1969, Kelley self- published his findings in The Golfing Machine: The Computer Age Approach to Golfing Perfection.