Okay, Hersh, now you've done it. A GT40 book I don't know about? Do tell us some details on the Guest book you quote--publisher, publication date, ISBN, etc. I looked it up on a couple of bookfinding websites with no hits at all, so unless you fess up on the specifics, I'll be forced to put on my all-black outfit and pick the lock on your front door in the middle of the night...
Bob