172510, I have flight instructors manual by R. D. Campbell. I did not use much of it though. Most of the stuffs are covered by fi trainer himself. As i said that, i do find it useful on how to teach (demo, teach, practice) and to look up some very technical details for homework. this is maybe because i have no experience in teaching and instructing. I haven't use the other book that you mentioned so can't comment on it.
hope it helps.
cheers