"Men of valor: they fight for you." (1943?)Link.
I'll be gone until September.
Propaganda As Art and History (with a few cute animals and astronomy thrown in the mix to keep things from getting too depressing)
"Ghost of a sailor with his arm around a soldier. He is pointing to a sinking submarine. Text encourages people to subscribe to the war loan." (1917)
"Sarms of British planes bombing a factory. 'What England wants!' Poster quotes from British Labour party leader Johnson-Hicks which appeared in the Daily Telegraph, Jan. 3, 1918: 'One must bomb the Rhine industrial area day by day with hundreds of airplanes, until the cure [destruction of German industrial production] has occurred.'" (1918)