This was an interesting aspect to Walsh's history and Belichick's desire to learn.
But one of Belichick's favorite coaches and it you asked him who was the greatest professional Coach of all time, he would most likely nominate the man in the gray Fedora, Mr. Paul Brown.
Indeed Belichick is a Brown disciple if there ever was one. He has a prized copy of one of Brown's books. It was a prized book of his father's library that was lovingly given to him by his dad, if I remember the story correctly.
Halberstam speculated that Belichick thought the Trophy signifying League supremacy should be be called the Brown Trophy, if I recall correctly..