Transmitting Thoughts by Radio -- April 3, 2013

Joseph Dunninger was a famous mentalist.  He performed in vaudeville and was a pioneer in performing mentalism on radio and television.  In this photo from the November, 1929 Radio Digest, he is "shown ... in the act of transmitting thoughts by Radio for a recent test through the NBC.  He projected one of three thoughts to 55 per cent of his audience."  I had his book Dunninger's Complete Encyclopedia of Magic.