"Melbourne" Thomas was a Doctor of Medicine, having studied first at University College, Cardiff and then at St Bartholomew's Hospital, he also played rugby for both institutions. During the First World War he enlisted in the Royal Navy, serving as a surgeon sub-lieutenant. After the war came to a close, in an effort to rebuild the sport of rugby, a match was organised between a Wales team and the New Zealand Army. The game was arranged for 21 April 1919, to be played at St. Helen's in Swansea. Thomas was chosen to represent Wales, earning his first international cap.
Billot, John (1972). All Blacks. Ferndale: Ron Jones Publications.
Smith, David; Williams, Gareth (1980). Fields of Praise: The Official History of The Welsh Rugby Union. Cardiff: University of Wales Press. ISBN0-7083-0766-3.