Attributed in Wash. Post, 30 Nov. 1952. The Post article is quoting an article in Quick Magazine from the summer of 1951. According to a letter by William S. Rubin in the New York Times, 5 Jan. 1969, this is "a trumpery originated in Il Libro Nero published by Giovanni Papini in 1951."
Michael Shermer (2011). “The Believing Brain: From Ghosts and Gods to Politics and Conspiracies---How We Construct Beliefs and Reinforce Them as Truths”, p.184, Macmillan