text: Chatterbox was unable to obtain details of this story , but Murph Murphy is the person to whom Edward H. Heinemann , an aircraft designer and engineer for Douglas Aircraft in the 1940s and ' 50s , attributes Murphy 's Law in his ( Heinemann 's ) 1980 autobiography , Ed Combat Aircraft Designer . Chatterbox got the poop on Murph Murphy from Fred Johnsen , the historian at the Edwards Air Force Flight Test Center .
  
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  As far as the details go , Chatterbox wasn 't able to confirm them .