1941 version of the short film The Ford Rouge Plant: A Story of Men, Methods & Motor Cars - ARC Identifier 91468 - and a 1937 version of the film - ARC Identifier 91520 - which doesn't have sound. "All rights were conveyed to the U.S. Government on Nov. 28, 1962. However, proprietary rights or existing copyright in footage obtained from other sources by Ford Motor Company may exist."