 Their source is "The German White Book", a pamphlet of official documents published to justify the German government's position after the outbreak of war.The term "Willy-Nicky Telegrams" is derived from "The Willy-Nicky Correspondence", the title of a book by Herman Bernstein published in 1918 which revealed the personal telegraphic correspondence between the two emperors during the period of June 1904 to August 1907.The telegrams start with a plea from Nicholas to Wilhelm to try to stop the serious developments that led up to the World War.