Tom MacWood,
I'm looking in the revised and updated World Atlas of Golf, and can't find the picture, what page is it on ?
I found it in the 3rd edition.
I don't know when it happened, but Baltusrol moved away from the longer grass look to a crisper look many years ago, before Rees.
There are some terrific pictures in the clubhouse of the course in earlier days. One of my favorites is a picture of the 4th hole with knee high grass behind the green.
If my failing memory serves me correctly, in the 1967 USOPEN I believe Trevino hit his ball behind the 4th green and played a unique recovery shot to the green from longer grass.
Baltusrol was never "wild" in appearance, but longer grass in the roughs were common in certain areas.
If you'll look at the picture of the 15th hole on the next page you can see that there is nothing "wild" looking about the roughs or bunkers.
How do you date the photos as mid 70's ?
You may recall, when you quoted Rees, that he made no mention of altering the 17th hole sahara bunker.
Since you view that PR piece as the gospel, you can eliminate Rees as one of your suspects.