James Montgomery Flagg (1877 - 1960) was an American artist and illustrator. He is most famous for his war effort posters but he also work for magazines, did cartoons, and even paintings. WWI propaganda poster encouraging children to save money for the war as well through War Saving Stamps. Children couldn''t afford liberty bonds, but to encourage them to support the war, the government sold war savings stamps worth 10 cents and 25 cents. Like war bonds, the stamps paid interest. In this poster, Uncle Sam teaches children a lesson not only about patriotism but about the importance of saving.