The Philemon Foundation was established in 2003 by the American Jungian analyst Stephen A. Martin and the British historian of psychology Sonu Shamdasani to prepare the unpublished works of C.G. Jung for scholarly publication. Its principal output is the Philemon Series, an ongoing critical edition of previously unpublished manuscripts, seminars, and correspondence — most visibly, the publication of The Red Book (Liber Novus) in 2009. The foundation operates as a nonprofit publishing scholarship body and works in collaboration with the Jung family heirs, archives at ETH Zurich, and academic institutions in the United States and the United Kingdom.