Hi group, While this may be a bit off topic, I have been fascinated and enriched while observing your conversations about Mr. Edison. I would like to learn more about him. Please forgive me if this has already been addressed in the past. I recently rented the 2006 movie "The Prestige", said to be based on a true story, depicting a pair of comptitive magicians in London at the turn of the century. One follows the other to the wild west of Colorado in search of an inventor who has developed an electrical aperatis capable of generating lightening bolts on stage as a climactic feature of a disappearing act. I noticed, a couple of times, a reference to "Edison's men" who were apparently stalking the inventor or the aperatis itself. My question(s): were Edison's "men" protecting his patents, or doing recon on something new, or just Hollywood spinning a good yarn? Just curious. Perhaps you can refer me to an area of further research. Thanks very much, Steve