Photo editor Roger Varley, left to right, photo editor George Garlock, photo technician Fred Reynolds and chief of picture Jack Tracy work in the photo department in Toronto in this 1959/60 file photo. The Canadian Press, the national news service that was created during the First World War to bring home stories from the European front – and went on to become the country's go-to, real-time source – turned 100 Friday. But even dedicated news junkies might not know where to send a birthday card. Described by some scholars as a cornerstone of Canadian history, CP remains a mystery to many, a low-profile but central part of the news landscape. Its news stories, photos, videos and radio broadcasts, in both official languages, appear in almost every media outlet in the country, yet readers or listeners are often unaware of their source. THE CANADIAN PRESS