TEPaul,
If we knew what they were, they'd probably be discovered by now.
North Shore may be a great example of uncovering what was perceived as a historical fact, architecturally, being disproved and corrected with the credit given appropriately.
I suspect that there's a good deal of "North Shore" discoveries out there.
Especially in terms of a project manager or subordinate being given free reign once the architect of record provided the routing.
Establishing the architectural pedigree is often hard to achieve.
Just look at the 8th hole at Hidden Creek and how that came into its final form.
I'll give you another modern day example, in terms of difficulty in deteriming the "feature" author.
Sebonack.
We know that it was Tom Doak's routing.
But, exactly whom did what remains a mystery to most of the outside world, despite the publishing of a contemporary account.
How much "Donald Ross" was actually Hatch, McGovern or Murray ?
More recently, I'd love to know the details on Old Macdonald.
I think you've hit on a great topic.
At Mountain Ridge, a spectacular 1929 Donald Ross, two greens differ significantly from Ross's original schematics and field drawings.
I've heard that Strong redid the 3rd green and Tillinghast the 7th green.
Tillinghast was involved locally in 1931 when he designed and built Alpine, giving credence to his part in an early revision at Mountain Ridge.
The problem with some early (pre WWII) aerial photos is their poor resolution, which in turn makes determining the date of the detailed changes somewhat more difficult.
I am especially interested to attribution on Ross courses since he produced an inordinate number of them and it seems logical that project managers might have had a free hand in alterations/modifications with and without his approval.
I would imagine that courses where he spent little or no time would be especially prone to the revisions of other parties, including the club and possibly other architects.
Like your course, Gulph Mills, many courses are mutts or hybrids, the product of multiple architects, and knowing who did what and WHY is a fascinating study
I can't believe that you thought of this topic on your own.
Did Wayno or Mayday help you on this ?
Or, did you get this idea from me a few years ago and you just remembered it the other day when you fell off your tractor ?