You are not alone in missing Bill & Oscar, Doug. Both were charitable & considerate people who added immensely to our lives sharing their knowledge & appreciation of things double.
Your source makes that particular double even more interesting; I don't know that you could have better provenance. 
Bill was a very astute reader of character & talent. I know he would be pleased to see it coming along toward completion. Bag a couple of birds w/it when its done & send a few of the feathers to Rosalie for Bill's old mojo bag. He'd likely appreciate that.