Doug,
The greens have shrunk considerably, such that many of the mounds around today's greens used to be internal to them.
Also, a number have flat out changed or been moved over the years.
There were a number of hands in the pie after the original Wilson/Robinson design, including Donald Ross, Wilfrid Reid, Tillinghast, William and David Gordon, and Bob Cupp, at minimum.
Still, there are lots of cool architectural features remaining, the original routing remains and if we get the chance to discuss Sunday I can try to let folks know what changed on the internals of some holes.
One sad fact though is that the greens were absolutely renowned as wild, creative affairs when opened, which would surprise anyone playing there today.