Wow...it's tough to imagine that's not a green on that little island on #4. I even just brought Jenna over and said, "honey, can you spot the green in this picture?", and she went right to that spot.
It does beg the question of why there is a bridge front, left, and over that area, but there is still much to be learned. Also, when I blow it up, it does seem to be mowed differently, in a way that's consistent with the other greens in the pic. The area of the present 4th green doesn't appear different than it's surroundings. Weird.
I'm hopeful a scorecard might help, but I'm a bit dubious, as well, because I just went back to look at a scorecard from about 10 years ago and found the following yardages from the Back and Middle Tees;
1 - 510 475
2 - 370 355
3 - 347 300
4 - 159 149
5 - 493 393
6 - 142 132
7 - 519 449
8 - 217 197
9 - 275 268
2912 2621
10 - 311 294
11 - 449 439
12 - 447 437
13 - 393 383
14 - 638 600
15 - 486 421
16 - 284 278
17 - 210 180
18 - 410 380
3748 3509
6660 6130
The course is virtually identical today and the back tee yardage is 6202.
I think I have an older scorecard as well that I'll try to dig up.