Norman Tindale was a prodigious anthropologist and polymath who chronicled aboriginal culture, studied butterflies and moths, and broke Japanese wartime codes.
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