 The American art collector Walter Conrad Arensberg (1878–1954) believed that Bacon had concealed messages in a variety of ciphers, relating to a secret history of the time and the esoteric secrets of the Rosicrucians, in the Shakespearean works.He published a variety of decipherments between 1922 and 1930, concluding finally that, although he had failed to find them, there certainly were concealed messages.He established the Francis Bacon Foundation in California in 1937 and left it his collection of Baconiana.