John Curwen Horner was educated at Sydney High School and studied art at East Sydney Technical College from 1940 to 1942. He returned to college after his enlistment in the Australian Army in 1943. Horner was involved in campaigns for Aboriginal rights, and became Secretary of the Aboriginal-Australian Fellowship, and was also Secretary of the 'Vote Yes' Committee for the 1967 referendum. Later he was an executive member of the Federal Council for the Advancement of Aborigines and Torres Strait Islanders, and of the Australian Council of Churches Commission on Aboriginal Development. Horner was also a member of the Australian Institute of Aboriginal and Torres Strait Islander Studies. (Source: AIATSIS website)