Here is a photo, presumably by the look, taken not very long after the one Pete supplied, showing the greenside bunkers w/sand added. Interesting how the large fan bunker isn't as prevalent or noticable as it lay from the view behind. It actually is hard to tell how the hole is situated in relation to the 9th and back to the tee. It seems there are many small sappling trees there from one photo to the other, but not where you would think they should be.
It is also disorienting from Pete's photo how high above the mansions look in that era before tree growth, and the modern era. It almost looks from this photo like the mansions on the hill were taken down and the hill was cut down 50ft.
I've only seen the Riv once, but comparison photos of the same hole (the 10th) over the years has me disoriented.