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.
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.