well, I always catch flack for this, but I have problems with Deep Blues. He, in effect, cites many other sources (as far as can be told) but without any notes. I like the interviews, but his musical observations are just a bit too re-hashed (see Paul Oliver, eg). I've always found Giles Oakley to be miles ahead in his blues history, the Devil's Music. But, as I indicated, I am in a tiny tiny tiny tiny minority here (I'm also the guy who doesn't like Charlie Gillette's book).