I have had the pleasure or doing some work on Diddels 1950 Wichita CC and have gained immense respect for his work. The background on Ron's website appears to be a Diddel Green Detail.
I think his work was influenced by Maxwell, but was toned down a bit. More of his contours came in from the edge of the green, but it seems rare that he placed the "muffins" in the green. Maybe as a good player, he felt the internal contours weren't "fair?"
At WCC, he had one wild green with a cluster of five bunkers. It was quite out of character with the rest of the holes, but I felt he was either experimeting, or actually liked to do one or two different greens for variety. When we redid the bunkers, the club opted for "consistency" and we still joke about it today, but I was dissapointed to not rebuild that bunker cluster.
I also noticed on his plans how he varied the distance fw bunkers were placed from the tee. As short as 200-220 into the prevailing Kansas wind and as much as 270 on downwind holes.
I have often wondered if he was the originator of the "diddle bump".
That, as Forrest (Gump, not Richardson) might say, is all I have to say about Bill Diddel......
BTW, Ron needs to update his link to ASGCA, since we just relaunched the new ASGCA site, and his link no longer works. I suppose I could call him direct but I bet he reads this!