Among the scholars who agree on dating this tradition of the resurrection appearances to the early 30s are the following: Oscar Cullmann, “The Tradition: The Exegetical, Historical, and Theologica1 Problem,” in The Early Church, ed. A. J. B. Higgins (Philadelphia: Westminster, 1966), pp. 65–66; Brown, Virginal Conception, p. 81; Ladd, I Believe in the Resurrection, pp. 141, 161; O’Collins, What Are They Saying About the Resurrection? p. 112; Fuller, The Formation of the Resurrection Narratives (New York: Macmillan, 1971), p. 48; Pannenberg, Jesus, p. 90.