I've been a student of aikido since 1985. I have studied with many teachers, but consider the late George Simcox to have been my instructor..
Ed, welcome. When I saw your post about working w/ a training partner w/o arms, I wondered if you'd been part of George's dojo. I was fortunate to meet George at aikido-l seminars + to visit his dojo a couple of times. Quite a man; I understand why you consider him to have been your teacher.