The St. Lawrence Seaway -- Film Description:
"A clear and vivid picture of the development of the St. Lawrence Seaway and how it will serve the industrial heartland of North America. Film animation alternating with live photography shows how the new water-stairway enables ocean-going ships to travel right to the head of the Great Lakes."
-- National Film Board of Canada

Source:
National Film Board of Canada. "NFB -- The St. Lawrence Seaway." National Film Board of Canada. http://onf-nfb.gc.ca/en/our-collection/?idfilm=10934.