George O'Neill sounds right as the designer, and KN did a lot of remodeling there, usually a green or two a year starting in the late sixties or early 70's. The program ran so long that even I did a few as an apprentice there, and with the added incentive of having worked two college summers there on the maintenance staff.
As I recall, my greens were 9, 15, 16, 17 and were, I think, the last four done, before 1982 or so. 15 is one I modeled more after some of the golden age greens, like Colt and Allison greens around town. I did the radical thing (to KN) of putting the green mounds on the outside rather than inside green curves and resulting in a flowing skyline to the back edge. I will say it met with some resistance in the office, but as non descript as that green is, contouring it like that was a real learning experience, and one of the landmark greens of my early career!
The trees have grown since I was last there!