 Congressman, science fiction author and Atlantis theorist, wrote "The Great Cryptogram", in which he argued that Bacon revealed his authorship of the works by concealing secret ciphers in the text.This produced a plethora of late 19th-century Baconian theorising, which developed the theme that Bacon had hidden encoded messages in the plays.Baconian theory developed a new twist in the writings of Orville Ward Owen and Elizabeth Wells Gallup.