Great Lakes: Their Link with Ocean Shipping (1948)
Portrays the lakes as an important shipping route for a region of vast natural resources, major population centers and extensive industrial development. Shows the Welland Canal and the St. Lawrence Seaway as important links between the lakes and the ocean.
- Country : United States of America
- Genre : Documentary
- Studio : Encyclopædia Britannica Films
- Director : Clifford J. Kamen
- Cast : James Matthews