Between 1919 and 1920, Case and Michael Whitty collaborated in the development of the text which would later be published as "The Book of Tokens". This book was written as a received text, whether through meditation, automatic writing, or some other means. It later surfaced that Master R. was the source. On May 16, 1920 Case was initiated into Alpha et Omega's Second Order. Three weeks later, according to the Hermetic Order of the Golden Dawn's bio-page on Case, he was named Third Adept.