PreviousImam al-Mahdi
http://al-islam.org/topical.php?sid=305657393&cat=125A collection of articles and audio resources about the Twelfth Imam (according to traditions of the Twelvers); many are devotional, but not all.
Submitted in section: Religion & Spirituality: Islam: Shia: People: al Mahdi, Muhammed: Imam al-Mahdi