sentences:  In addition to these, he had some involvement with the organisations described below.He and his wife Phyllis led much of the work to improve the status of Aborigines in South Australia during the mid-twentieth century.Duguid was appointed a founding member of the South Australian Government's Aborigines Protection Board in 1940, after the "Aborigines Act Amendment Act 1939" created this entity, which was "charged with the duty of controlling and promoting the welfare" of Aboriginal people (which included anyone descended from an Aboriginal person).