WW I poster USA World War I, American propaganda poster showing a war-ravaged battlefield with barbed wire and trenches, and in the distance across a body of water, a city of skyscrapers with a serene man's face (Uncle Sam) hovering above. Original Title: The Harriman National Bank urges faith, courage, and patience. Artist: M. Waddell Lithograph poster, color; 68 x 50 cm. Harriman National Bank. Metro Litho. Co.. New York 1918.