Film Registry, A&C Black, 2010 , pages 390-391 USAAF First Motion Picture Unit at Magic Lantern Why We Fight #1 - Prelude to War (Text) Documentary film series United States National Film Registry films United States government films Documentary films about World War II World War II films made in wartime American documentary films American black-and-white films 1940s war films 1940s documentary films Black-and-white documentary films American film series Film series introduced in 1942 Films directed by Frank Capra World War II propaganda Articles containing video clips