Hoot.I quite agree that McCormack is probably sitting on a vast ammount of blues related information. You mention a book with Paul Oliver. There was, of course, another planned about Robert Johnson (complete with unseen photograph)and this has not appeared. But, there is no law to say that privately researched material has to be made available to other people. Of course, most researchers are only too willing to share their findings. Here I'm thinking of you and all the articles that you have researched and written about the blues and old-timey music. I have also tried to share material that I have found. Surprisingly, I have often found that professional academic researchers are often the people who will not share their findings. I agree that it is a pity that Mack McCormack has retained so much material. But that is, after all, his choice and there may be reasons why he has acted in the manner that he has.