这张1941年时男童子军在国会大厦前的海报，在第二次世界大战时被用来激发人民的爱国心

出处: Rous, John, photographer. "United Nations Fight for Freedom: Boy Scouts in Front of Capitol." Circa July 1941. America from the Great Depression to World War II: Photographs from the FSA-OWI, 1935-1945, American Memory collections, Library of Congress.