Past histories charting interactions between British healthcare and Aboriginal Australians have tended to be dominated by broad histological themes such as invasion and colonization. While such descriptions have been vital to modernization and truth telling in Australian historical discourse, this paper investigates the nineteenth century through the modern cultural lens of mental health. We reviewed primary documents, including colonial diaries, church sermons, newspaper articles, medical and burial records, letters, government documents, conference speeches and anthropological journals. Findings revealed six overlapping fields which applied British ideas about mental health to Aboriginal Australians during the nineteenth century. They included military invasion, religion, law, psychological systems, lunatic asylums, and anthropology.