Flagg, James Montgomery Boys and Girls 1918. Uncle Sam holds a War Savings Stamp certificate explaining to a model-perfect girl and a boy that saving their quarters to buy stamps will help to end the war. Many small contributions did make a difference. The money raised was staggering even by today’s standards. Now hard to find.
Bibliography: Aulich, James War Posters Weapons of Communication, 103, Rawls, Walton Wake Up, America!, 216.