BERLIN GNOSTIC CODEX (PAPYRUS BEROLINENSIS 8502)
A fifth-century papyrus manuscript discovered in Egypt sometime in the 19th century and purchased for the Berlin Museum in 1896 by Carl Schmidt. It contains three Gnostic tractates and one non-Gnostic Christian work. These are, respectively, the Gospel of Mary, the Apocryphon of John, the Sophia of Jesus Christ, and the Act of Peter. Two of these also occur in the closely related Nag Hammadi collection: the Aprocyphon of John (NHC II, 1; III, 1; IV, 1) and the Sophia of Jesus Christ (NHC III, 4). The Act of Peter was published by Schmidt in 1903 and the rest of the codex by Walter Till in 1955.