An excellent well researched book that I have referred to many times. My edition is 1976 and covers the films from 1903 to that date. Just about everything is covered, and particularly interesting to me are the reviews of the silent Eille Norwood films (would like a chance to see some of these), and the series of british films made in the thirties featuring Arthur Wontner, who was the critics choice for many years due to his remarkable resemblance to the Sidney Paget drawings in the Strand magazine. This is much to the author's credit, as Wontner didn't even get a mention in the fairly recent BBC documentary 'A study in Sherlock'. One of the Wontner series, 'The missing Rembrandt' is lost at time of writing, as is the 1931 version of 'Hound of the Baskervilles' with Robert Rendel, both of which add to the tantalising attraction of Sherlock Holmes films.
There aren't any references to the Jeremy Brett series as these appeared later, however the author has covered these in other works.