Tom
I'll mostly reiterate what Robert wrote. The general routing of the course is as Colt designed. The biggest change being moving the whole 13th and I think the 15th green was shifted too (for the new 9). I think some of the greens have had contour changes too (3,4?,7,16?).
The bunker redo work has disregarded Colt's drawing and style.
The club has the report by Alison...not sure what he suggested.
It's an excellent course...in my view not quite as good as Toronto GC which is more intact and has more interesting greens.
The sharp switchback streams/creeks are unique in their curviness, in my experience.