| Date: April 1, 1959 | |
| Seaway Formally Opened | |
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 Queen Elizabeth II at the opening of the Seaway |
Date: April 1, 1959 Seaway Formally Opened
The St Lawrence Seaway was opened to commercial shipping. Queen Elizabeth II and President Eisenhower dedicated it on June 26. The Seaway provided transportation for ocean going vessels from Lake Superior to Montréal.
Queen Elizabeth II at the
opening of the Seaway