there is some mention of him in one of Wiley's books. (I know you were looking for more). I will do some review and try and post a real answer tomorrow.
Rey Galang is going to be re-printing his original book mga karunungan sa larung arnis. which was the first fma book published in 1957. I believe it is more of a long range style though I could be wrong. If I am right, the original is still available at the university in manila.
