From a fragment of a catalogue sheet held among Helen Hitchings Gallery papers in the Museum of New Zealand Te Papa Tongarewa Archive, it seems that the McCahon works were Virgin and Child as a Lamp 1950, Crucifixion 1950, The Angel of the Annunciation 1948 and Ligar Bay 1948.
Text extracted from: Marja Bloem and Martin Browne, Colin McCahon: A Question of Faith. Craig Potton Publishing, New Zealand, 2002, p. 251.