This propaganda poster, again from the era of the Second World War, warns of the risk of German spies infiltrating the civilian communities of the Allied Powers. This message was spread consistently during the war and for some time after it was over.
"Knock The 'Heil' Out Of Hitler. Let's Keep 'Em Pulling For Victory" ~ WWII propaganda poster showing Adolph Hitler being knocked off of his feet by a GMC truck. This poster was used to mobilize the domestic workforce to increase war production. Ca.