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Waterway: The Story of Seattle's Locks and Ship Canal: Williams, David B., Ott, Jennifer, HistoryLink, Staff of: 9781933245430: Amazon.com: Books
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Lock (water navigation) - Wikipedia
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Waterway: The Story of Seattle's Locks and Ship Canal: Williams, David B., Ott, Jennifer, HistoryLink, Staff of: 9781933245430: Amazon.com: Books
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