1957-58 was the 12th season of the Western International Hockey League.
Spokane vs. Trail (Best of 7). Spokane Flyers beat Trail Smoke Eaters 4 wins to 3.
Nelson vs. Rossland (Best of 7). Rossland Warriors beat Nelson Maple Leafs 4 wins to 1.
Rossland vs. Spokane (Best of 7). Rossland Warriors beat Spokane Flyers 4 wins to 2.
Rossland Warriors advanced to the 1957-58 British Columbia Senior Playoffs.
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