Wader, that's one of the problems with aviation books - in reality there isn't much information around other than stuff which has already been previously published in books and magazines. Most books are essentially based on information gleaned elsewhere, although most tend to have something new to add here and there. The problem is that it's all too easy to assume that just because something's written in a book or magazine, it must be true. Of course that's often not the case, and so stories and "facts" get repeated time and time again without anybody ever stopping to question anything.
It's rather like the infamous "Vulcan B.Mk.2A" which pops-up in just about every Vulcan book and article, or the "SR2" etc., and yet no such designation existed. Then there's the story that Roy Chadwick lovingly created the delta/flying wing design, whereas he didn't in reality. Things get really bad when you get things like the new book I've mentioned, and the author invents new stuff of his own... "Vulcan B2 BB" - eek!
Books are never perfect sadly - you have to gather all the available information and make a (semi) educated guess!