Excerpt From "The Plow That Broke The Plains": http://www.archive.org/details/PlowThatBrokethePlains1
Excerpt from: "Henry Ford's Mirror On America" Part One of the complete film can be found at: http://www.archive.org/details/HenryFor1962 Part Two of the complete film can be found at: http://www.archive.org/details/HenryFor1962_2