Doctor and K9, I think MB means the DS Files book edited by Edward Gross (no relation to Darren Gross, so far as I recall). To me the most interesting selection in the book was an interview with Grayson, which Gross claimed was the last interview she ever did before her illness.
The last I heard, the book, which is out of print, was selling for outrageous prices on the internet, but some diligent fan might have scanned at least some of the material.
G.