_Mark Twain A to Z_ by Rasmussen gives a good synopsis of the Twain/Edison relationship. _Twain's World_ on CD ROM contains one mention of Tesla that occurs in a letter to Livy that Sam wrote Feb.1894 where he mentions that he met Tesla, "the world-wide illustrious electrician" at a party. The practical joke that Bleiler refers to between Edison and Twain is unreferenced. Barb