National Geographic : 1950 Sep
341 KodaIhrome by 1. Anthony Stelart and John E. Iletchcr Dredged Ship Channel Boomed It into a World Port 1,000 Miles from the Sea The channel links Montreal to deep water near Quebec City. Upriver canals stretch its commercial reach half across the continent. In its open season the St. Lawrence handles nearly a third of Canada's foreign trade.