Flagg's depiction of Uncle Sam was shown publicly for the first time, according to some, on the cover of the magazine Leslie's Weekly on July 6, 1916, with the caption "What Are You Doing for Preparedness?"
Slika Ujaka Sama prvi put je prikazana javnosti na naslovnici časopica Leslie's Weekly izdanog 6. srpnja 1916. godine, s naslovom "Što radiš za pripravnost?"