Thomas Osborne's contribution to the HP 9100A is well documented, but I seem to be unable to trace back what he did after "the initial journey", as Steve Leibson phrased it on his gorgeous 9825 yet unfinished 9825 site. From what I read, he was a rather independent spirit, never hesitating to leave a company unable to follow his vision, and likewise did not stay with HP for long. Who knows more?
Andreas