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Originally Posted by kmmcnabb
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I find it interesting that both were putting out info at about the same time frames (1979-1980s). I think Hay may have been earlier with 1979 but someone who knows Homer better may know if he beat him to the punch.
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The first edition of
The Golfing Machine was published in 1969, ten years earlier than the 1979 date you reference for Hay's work.