Ed Litton would be a good person to talk with. He learned from Bernie Mikkelson and later collaborated with both Albert Eisentraut and Bruce Gordon. (Ed and Bruce were good friends; I believe Bruce was the best man at Ed's wedding.) In addition to building his own top-drawer frames, he has repainted and/or repaired a ton of frames from a ton of shops/builders, so he would no doubt have some valuable insights. Plus he's a nice guy. I suspect he would be a font of useful information.
Of course, Albert Eisentraut would be a fine addition to any such project, although there is a fair amount of stuff out there from and about him already. Ed Litton is still in touch with him, BTW. Sadly, neither Ed nor anyone else is still in touch with Bruce Gordon or Roland Della Santa . . .
