The CAAB Melanesia expedition took place from 22 July 1972 to 11 October 1972.

"Diary of Fieldwork in Melanesia for Commonwealth Art Advisory Board".

This notebook covers the period 22 July 1972 to 16 September 1972.
This is a day-to-day narrative with much more detail than the three diaries at AA 255/14/28/1-3.
As this notebook finishes at 16 September 1972, there are possibly other notebooks covering the period after 16 September, i.e. the period 17 September to 11 October 1972.