Mark,
Wonderful article!
I was drooling over the Bergman wet fly plates in the early sixties, determined to tie flies just like those the Dr. Edgar Burke had painted. Unfortunately, so were many others, with the result that wet flies were grossly overdressed for the next forty years (1938, IIRC was the first ed of "Trout", but "Fishing with Plug, Fly and Bait" was IMO, an even better Bergman book in some respects and had plenty of plates). It may be the over-dressing of "Bergman" flies that led to the decline in use of wet flies, as much as the increased interest in nymph fishing. (What is a Prince Nymph but a Coachman with a bad hair day?)
I still have, and carry, boxes of Bergman-style wet flies. They are just bloody beautiful!! However, before I fish one I clip away half the wing and most of the throat. It hurts, but it works.
Walter Dower painted the fly plates for A.J. McClane's superb work "The Practical Fly Fisherman" (1953). The plates have since been lost so the revised version of the book in 1977 lacks them. Nevertheless, below is a photo of A.J.'s favorites wet flies (sorry for the quality of the shot, it was taken in a rush) from the 1953 copy. Notice #15 has the hackle sparse and back, as you do, unlike the Bergman plate which has upright and relatively thick hackle (IIRC -- my books are still packed from a move).
Best regards,
Reed