Cyril Kenneth Bird CBE (17 December 1887 – 11 June 1965), known by the pen name Fougasse, was a British cartoonist. He was perhaps best known for his work in Punch magazine (of which he served as editor from 1949 to 1953) and his World War II warning propaganda posters; "Careless talk costs lives" was one of the most popular. He also designed many posters for the London Underground. Source: Wikipedia (en)