1922 Encyclopædia Britannica, Volume 31…
“ When the World War broke out in 1914 and neutral countries were impelled to take counsel together, King Gustavus took the statesmanlike action of inviting the kings of Norway and Denmark to a meeting at Malmö, and on a later occasion he himself journeyed to Christiania where he had once sat as regent. During the war he exerted himself personally to ensure the maintenance of a policy of honourable neutrality. His eldest son, the Crown Prince Gustavus Adolphus (b. 1882) , also devoted much time and energy to sport, and interested himself in archaeology. ”
