The fellow that was unhappy with my list wrote back and was REALLY nice about it. Really nice. He explained a lot and told me a few things to look into or just plain set me straight where the list is way off, which was a good thing. So the long and short of it is, I know more about the topic but I've got a lot more work ahead to make it accurate. Sigh. Such is life. Nothing comes easy.
And I just want to say here and now that guitar collectors are some of the nicest and friendliest people on earth. I've got a friend who runs an in-home concert venue for musicians who has been so sweet about helping me through my frustration in researching this topic. Another friend of mine, who manufactures guitars, told me I was plain crazy to attempt such a list...that it couldn't be done. But it hasn't stopped me from trying.
I leave with a quote from the great Albert Einstein: "If we knew what we were doing, it wouldn't be called Research."