Ransom H. Thomas and Wynant D.Vanderpool both worked their way through the hierarchy of the USGA in the same time frame as C.B.Macdonald, with both men attaining the position of president, Ransom in '05 and Vanderpool in '24. Both men were also members at MCGC. I can't help but think that CB would have taken a keen interest in what transpired on that particular site.
I can't help but think that, considering their long association with CBM, Thomas and Vanderpool were very motivated to make it sound like Macdonald was taking a keen interest, whether he was or not.
I guess I just wonder if Macdonald was really the architect, how was his involvement hidden for so long? Why hasn't the club been promoting it all this time? And why didn't Macdonald himself mention the project in his book, which was written several years after the course was finished?
The odd bit is that it's more common for architects to exaggerate how many courses they've done, instead of deferring credit for ones they did do. I'm odd that way, too, but I try to be pretty clear about my role in anything we've done. It was a hobby for C.B., though, so he may have felt differently ... he could well have built the project and then written it out of his biography because they did something to piss him off.