Originally posted by jriley:
...PROFESSIONALS that have a great impact on magicians and laymen but choose to remain out of the magic spotlight. ...
The two notions are almost exclusive. Usually it's not till they are dead and the scavengers, dumpster divers and collectors start to crow about their acquisitions does news of their contributions make it into magicdom.
Consider J. N. Hofzinser, J. E. Robert-Houdin and Del Ray as examples.
I guess you could put Robert Harbin, Walter (Zaney) Blaney and Al Goshman on your list. Here are a few more for your list: T. Nelson Downs, Richard Cardini, Max Maven, David Roth, Nate Leipzig, Blaultier DeKolta and Tommy Wonder.
This off the top of my head and in no particular order.