On the “appearances” tradition, set now William P. Loewe, “The Appearances of the Risen Lord: Faith, Fact, and Objectivity,” Horizons 6 (1979), pp. 171–192; Fernando Quesada Garcia, “Las apariciones y la Ascension en la economia salvifica,” Burgense 26 (1985), pp. 351–377; Daniel Kendall, “Catholic Theologians the Post-Resurrection Appearances,” Priests & People (London) I (1987), pp. 45–50; O’Collins, “The Appearances of the Risen Jesus,” America 156 (1987), pp. 317–320. On the importance of Peter’s witness, see O’Collins, “Easter Witness and Peter’s Ministry,” Heythrop Journal (HJ) 26 (1985), pp. 177–178; O’Collins, “Peter as Easter Witness,” HJ 22 (1981), pp. 1–18.