Letter to John of Jerusalem Concerning the Character of Rufinus - Anastasius had condemned Origen, and, by implication, Rufinus. Rufinus doggedly maintained that his was the faith of Jerusalem. Therefore Anastasius writes to John, the bishop of Jerusalem. www.ccel.org/fathers2/NPNF2-03/Npnf2-03-38.htm
Letter to Simplicianus - Written in 400 to inform the bishop of Milan that Anastasius had condemned Origen. www.ccel.org/fathers/NPNF2-06/letters/letter95.htm
