I have seen footage of him at seminars teaching from the book (LA I think). He re-released the book with his comments, and a video to match (I have both). And you just back up my point with the historical facts, which I was aware of. That is Mr Pranin though Saito Sensei's teachings in the 80's (I think) look like this book from the 30's! So thanks.
I took your initial comments to mean that the reason
that Saito Sensei's aikido looks so much like Noma dojo photos was that he "taught from a book," meaning that over the years he referenced these photos to confirm that he wasn't making significant changes to what he was teaching. I do not think that is correct. I think that scenario is a lot different than finding a book/series of photos after decades of teaching and noting the striking similarity to what he had been doing all along (my point). The fact that he re-released the book with his own comments, or pulls it out at seminars does not take away the distinction.