Alan Keith Tulloch was born on 6 December 1910 at Tolaga Bay, New Zealand. After graduating from Otago University in 1934, lecturing in anatomy and (presumably) holding resident posts in Wellington, he joined the Sydney Sanitarium and Hospital (now Sydney Adventist Hospital) at Wahroonga, New South Wales. He took the final FRCS in 1939 and was later elected FRACS in 1963. He is recorded as giving 35 years surgical service to the Sydney Adventist Hospital and was its medical superintendent from 1956 to 1968. A skilled surgeon, an able administrator, a man of principle and integrity and a committed Christian, he was a keen supporter and member of both the International Society of Surgery and the Collegium Internationale Chirurgiac Digestivae. A man of many interests outside his professional work he was an accomplished sportsman. When he died on 5August 1986, in Sydney Adventist Hospital, he was survived by his wife Thelma and warmly remembered by his many friends and colleagues. Unfortunately there are no further details of his family and professional life.