Uncle Sam gets an update on our black and blue tie dye T-Shirt. Instantly recognizable, this world famous figure continues to spread his message. 

The Uncle Sam World War I poster was created in 1917 shortly after the United States entered the war. Before he created this poster, artist James Montgomery Flagg was responsible for reinterpreting the image of Uncle Sam, who previously had been portrayed as a sedentary old man. Flagg reimagined Uncle Sam as active and authoritative. Intended to encourage young men to enlist in the Army, the poster is the best known of some 46 works that Flagg created to support the war effort. Flagg called this image "the most famous poster in the world."