He was on the New Zealand University Grants Committee, 1948–51, 1954–60, and on the Council of the Royal Society of New Zealand, being president from 1941 to 1942. He was a member of the Maori Purposes Fund Board, the Waitangi National Trust Board, and the Auckland branch of the Royal Society, and the Queen Elizabeth II Arts Council. He retired from the Auckland Museum early in 1964. His publications, apart from contributions to learned journals, include "The Moa, a Study of the Dinornithiformes" (1941), "South Sea Folk" (1937 and 1949); "Sculpture and Design, an Outline of Maori Art" (1955); and "Whaowhia: Maori art and its artists" (1977).