Soo Locks in Sault Ste Marie close Sunday for annual repairs
Soo Locks - YouTube
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Soo Locks - Wikipedia
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Soo Locks open early for 2021 shipping season > Detroit District > News Releases
Saulte Ste Marie, Michigan – The American Soo – Præteritum Michigan
Travel to Sault Ste. Marie, experience the Soo Locks brimming in history of maritime industry
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National Historic Preservation Act Turns 50 (U.S. National Park Service)
Soo Locks History
/cloudfront-us-east-1.images.arcpublishing.com/gray/NSDQ5AUNQVBLBCGQGADGE54WYI.jpg "Major construction continues the Soo Locks")