Tom -
I think you are on to something.
Myopia was the Harvard home course. (Still is for some matches.) Langford, Behr and Robert Hunter (Yale '11) would have played it in Harvard/Yale matches. Chandler Egan (at Harvard during the same years that Behr was at Yale), Bobby Jones would have played it frequently for the mighty Crimson. RTJ (Cornell) probably played it too.
Myopia was also the site of no less than 5 US Opens before 1920. It was THE course over that period. In addition to the foregoing folks, virtually every other architect of note would have played in or attended one or more of these Opens. MacD, Travis, Emmet, Ross, Fownes, etc.
I'm surprised, however, at how little I've seen in the literature about Myopia as an inspiration for other designs. A little odd. Or maybe it wasn't, in fact, very influencial. Leed's work at Palmetto (South Carolina, circa 1897), for example, had virtually no influnce I can find on courses in the SE.
I hope you or someone will hit the stacks and dig out some answers. An interesting thesis, though.
Bob