Kalsakau became chief of Fila Island in 1908 and held that position for many years. He was a member of one of the most notable New Hebridean families of Efate. His three sons, Graham, John and Makau are (1969) also outstanding members of the New Hebridean community.

1. Lists of important dates and events in Kalsakau's career and family life.
2. Record of births and deaths (1908-1961)
3. Accounts relating to business, household and the marriage feast of his son Makau (March 1, 1945)
4. Record (September 1956) of visit by Gen. and Mme de Gaulle
5. Centenary Celebrations, Erakor, 1st May, 1945 - an account of the settlement of Erakor by the early missionaries.
6. School fees collected in 1943 - list of families and amount paid.
7. Lease of land owned by Kalsakau.
8. Celebration of the 105th Anniversary of the New Hebrides Presbyterian Mission, May 1, 1950.
9. Correspondence regarding residency of Fila Island Reserve.
10. Discipline book (1911-1943) in which fines and other punishments against members of Kalsakau's village are recorded.