Evangelium Quadraginta Dierum
“Evangelium Quadraginta Dierum: The Forty-day Mission of Christ– The Forgotten Heritage,” Vigiliae Christianae 20:1 (1966): 1-24; reprinted under the title “The Forty-day Mission of Christ — the Forgotten Heritage,” in When the Lights Went Out (1970, 2001): 33-54; 49-90; CWHN 4:10-44. A study of evidences of the teachings of Jesus to his disciples in the forty days after the resurrection. — Midgley
See also “Forty Day Ministry“, a less-polished version of “Evangelium Quadraginta Dierum” given in lecture form in 1964.