Henrik Bogdan is Associate Professor in History of Religions at the University of Gothenburg. In addition to numerous articles, he is the author of Western Esotericism and Rituals of Initiation (2007) and editor of Brother Curwen, Brother Crowley: A Correspondence, by Aleister Crowley and David Curwen (2010).
Martin P. Starr was the editor of the Teitan Press series of the works of Aleister Crowley which appeared between 1985 and 2003. He is the author of The Unknown God: W. T. Smith and the Thelemites (2003), the first academic study of Aleister Crowley's followers in the USA.