Sorry to be picky John, but English and Anglo are two different critters. English has all the sharps & flats (like a piano-accordian), while Anglo has a couple of diatonic scales, plus a few accidentals (like a melodeon). Also, English plays the same note push and pull on each button, whereas Anglo has two notes per button, one push, t'other pull (again, like the melodeon).
So, an English handbook is not much use to an Anglo player. I'd recommend instead "The Anglo Concertina de-mystified", by Bertram Levy. It's expensive (about £18) but the price includes two audio cassettes. Try the Music Room, or Hobgoblin for a copy. Also, have a look at John Kirkpatrick's Home Page on the web - there's some useful material on Anglos there.
Wassail!