Pat:
We've looked into that pretty carefully over the years and the best evidence is that #3 green has virtually never changed. If one stands on that green and looks at the topography out and all around it one can see there is virtually no way that green could've ever sloped from front to back like a traditional redan or even from front to back on a real left to right diagonal. A few of those who know the history of that course best believe that green is essentially the top level of what once was a traditional Pennsylvania "Bank" barn. If we ever find any photos of that land before the course was built we might confirm that fact. Before 1910 that land was known as the "Dallas Farm". That's the way it appears on an old railroad plat map.
Personally, I've never understood all this discussion and arguing over whether or not that hole and green is a real or traditional redan. The fact is it's situated on a gentle ridge and that's at least one of the requirements of the basic redan hole according to Macdonald.
Was the hole inspired by Macdonald or Macdonald's Redan at NGLA? We will probably never know but we do know Wilson and his committee spent about a day and a half going over Macdonald's drawings from abroad and the next day carefully analyzing NGLA in early 1911 before Merion East's design was finalized and put into construction. So it's probably a fair guess that either he or NGLA may've inspired or influenced this hole but it will probably always be just that----eg a fair guess!
What we do know is there seems to be nothing around where Wilson and his committee or Merion ever actually said or wrote such a thing. Unfortunately, that just seems to be the way it went in those days.
Over five years ago Tom MacWood put a thread on here entitled "Re: Macdonald and Merion" that is now in the back pages. On that thread MacWood asked who specifically did what or who was responsible for what on the various holes of Merion East? We told him back then that noone knows the answer to that in detail, only generally, excepting that one story by Francis about the 15th and 16th holes.
If one pulls up and reads that old thread from over five years ago it appears he did not accept our answer on that. It's too bad he didn't because it's the truth and had he accepted it back then (instead of immediately claiming both we and Merion must be defensive and out to hide something
) we may've avoided over five years of contentiousness and rampant speculation on his part and on the part of another about who was generally responsible for the design of Merion East.