Career
Arthur went to Wagga Wagga Christian Brothers" and later to Saint Joseph"s College, Hunters Hill where he benefited under Brother Henry, the College"s legendary coach of the 1930s. He was a gunner in the AIF who saw three years of active service during World World War World War II
Tonkin joined the Gordon Club after his discharge and played the first of six matches for New South Wales in 1947. A powerfully built sprinter he added menace to every team in which he played because of his rare acceleration and scoring potential.
Tonkin appeared on the wing in all five Tests of the tour using his blinding acceleration to get around his opposing wingers to score tries against Scotland and Ireland.
He was also one of four kickers who figured in the Tests (along with Brain Piper, Trevor Allan and Bob McMaster) kicking two penalties against France in the Paris Test at Stade Colombes. Injury affected his representative prospects after the conclusion of the tour but he did make a further Test appearance against the British Lions in Sydney in 1950.
Tonkin became a lecturer in physical education after his football career ended and worked at Armidale Teachers" College where he also coached rugby. He retired in 1982, leaving the coaching of college rugby teams to John Hipwell.