James Montgomery Flagg
James Montgomery Flagg (June 18, 1877 – May 27, 1960) was an American artist, comics artist and illustrator. He worked in media ranging from fine art painting to cartooning, but is best remembered for his political posters.
He created his most famous work in 1917, a poster to encourage recruitment in the United States Army during World War I. It showed Uncle Sam pointing at the viewer (inspired by a British recruitment poster showing Lord Kitchener in a similar pose) with the caption “I Want YOU for U.S. Army."
At his peak, Flagg was reported to have been the highest-paid magazine illustrator in America. He worked for the Saturday Evening Post and Collier's which were two of the most popular U.S. journals. In 1946, Flagg published his autobiography, 'Roses and Buckshot.' Apart from his work as an illustrator, Flagg painted portraits which reveal the influence of John Singer Sargent. Flagg's sitters included Mark Twain and Ethel Barrymore; his portrait of Jack Dempsey now hangs in the Great Hall of the National Portrait Gallery.