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.
A pioneering neurosurgeon, Cairns worked extensively in the field of head injuries and was one of the first to promote the use of crash helmets for motor cyclists.
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