You guys are all close but "no cigars" yet. Bob Carmicheal came up the fly Whitcraft and you can find out what he has to say about the fly if you have a copy of J Edson Leonard's book "Flies"....try pg. 302 in the appendix.
BTW....Carmicheal is still alive and somewhere close here in Denver. Just yesterday had a conversation with a local antique fly shop owner who told me that Bob comes in and visits with him form time to time. He commented that Bob is worn physically but his mind is sharp as a tack. I hope I get a chance to bump into him and shoot some s.....
.....the original was tied with a macaw quill for the body.
"As far down the river as he could see, the trout were rising, making circles on the surface of the water, as though it were starting to rain."- E.H., The Big Two Hearted River