Radicalism has been inherent in South Australian history from its founding as a free settlement. Based upon the English radical liberal thought of its founders, the State's reputation grew as a progressive colony and the first to entirely separate church from state.
Sir Charles Todd was a leader in the fields of meteorology, astronomy and communications, and is best remembered for masterminding the construction of the Overland Telegraph Line.
The bronze bust of Sir Mellis Napier, sculpted by eminent South Australian artist John Dowie, commemorates his distinguished community service, including to the law and legal profession in South Australia