[presented by Lockheed Martin] ; a National Geographic film ; directed by Louie Schwartzberg ; written by Mose Richards ; produced by Lisa Truitt ; produced by Jini Durr
from Blackhawk Films ; presented by Flicker Alley ; curated by David Shepard ; produced by David Shepard for Film Preservation Associates, Inc. (Blackhawk Films) ; restored by Lobster Films