For my money, The Southpaw is by far the best of the Henry Wiggen books. It's probably too sweeping for a good movie ... something that couldn't be said about Bang The Drum Slowly.
I never got to meet Harris. In fact, I'm not certain he was still a member of SABR in recent years. If he was, the diligent office staff has already removed him from the member rolls, as they do whenever a member passes on.