There has been considerable debate over whether the remaining two ciphertexts are real or hoaxes. An early researcher, Carl Hammer of Sperry UNIVAC, used supercomputers of the late 1960s to analyze the ciphers and found that while the ciphers were poorly encoded, the two undeciphered ones did not show the patterns one would expect of randomly chosen numbers and probably encoded an intelligible text. Other questions remain about the authenticity of the pamphlet's account. In the words of one researcher "To me, the pamphlet story has all the earmarks of a fake . . . was no evidence save the word of the unknown author of the pamphlet that he ever had the papers."