For an accessible collection of the early (first–fourth-century) texts discussed in this article, see Bart D. Ehrman, Lost Scriptures: Books That Did Not Make It into the New Testament (Oxford and New York: Oxford Univ. Press, 2003). Late-antique and medieval apocrypha receive far less attention, but the forthcoming collection edited by Tony Burke and Brent Landau (New Testament Apocrypha: More Noncanonical Scriptures [Grand Rapids, MI: Eerdmans]) is a step toward remedying this problem. For a comprehensive overview of the primary and secondary literature, see the two volumes by Hans-Josef Klauck (Apocryphal Gospels: An Introduction, Brian McNeil, trans. [London and New York: T&T Clark, 2003] and The Apocryphal Acts of the Apostles: An Introduction, Brian McNeil, trans. [Waco, TX: Baylor Univ. Press, 2008]) or the shorter treatment by Tony Burke (Secret Scriptures Revealed: A New Introduction to the Christian Apocrypha [London: SPCK and Grand Rapids, MI: Eerdmans, 2013]).