The Fort William Beavers were a senior team.
That team played in the 1920-21 Thunder Bay Senior Playoffs.
The Beavers dated back to at least the 1950's. In 1955, the Beavers travelled to Kitchener, Ontario to challenge the Kitchener-Waterloo Dutchmen for the Allan Cup. The Dutchmen won game one 3-2 and the Beavers evened the series in game two with a 6-4 win. From that point on the series was controlled by the Dutchmen as they took the next three straight with 6-2, 7-6, and 5-3 victories.
They won the Thunder Bay Senior Championship from 1952-53 through 1957-58, in 1965-66, and in 1969-70. However they only managed to win the Western Canada Senior Championship in 1954-55. That year they lost the 1954-55 Allan Cup Final to the Kitchener-Waterloo Dutchmen.