| American Amateur Hockey League |
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In: Minneapolis Bermans
In: Minneapolis Jerseys
In: Rochester Mustangs
In: St. Paul 7-Up
In: St. Paul Koppys
In: St. Paul Tallys
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| 1947-48 |
6 Teams |
Out: St. Paul Tallys
|
|
| 1948-49 |
5 Teams |
| 1949-50 |
5 Teams |
Out: Minneapolis Bermans
Out: St. Paul 7-Up
Out: St. Paul Koppys
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In: St. Paul 7-Up-Koppys
In: Twin City Fords
|
| 1950-51 |
4 Teams |
Out: Minneapolis Jerseys
Out: St. Paul 7-Up-Koppys
Out: Twin City Fords
|
In: Eveleth Rangers
In: Hibbing Flyers
In: Minneapolis Millers
In: Sioux City Sunhawks
In: St. Paul Saints
|
| 1951-52 |
6 Teams |
| |
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| Central Hockey League |
|
Out: Eveleth Rangers
Out: Sioux City Sunhawks
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In: Eveleth-Virginia Rangers
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| 1952-53 |
5 Teams |
| |
|
| Minnesota Hockey League |
|
Out: Eveleth-Virginia Rangers
Out: Minneapolis Millers
Out: St. Paul Saints
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In: Grand Forks Redwings
|
| 1953-54 |
3 Teams |
Out: Grand Forks Redwings
Out: Hibbing Flyers
|
In: Minneapolis Bungalows
In: Minneapolis Culbertsons
In: St. Paul Saints
|
| 1954-55 |
4 Teams |
| |
|
| Central Hockey League |
|
Out: St. Paul Saints
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In: St. Paul Peters
|
| 1955-56 |
4 Teams |
| 1956-57 |
4 Teams |
Out: Minneapolis Culbertsons
Out: St. Paul Peters
|
In: St. Louis Park Culbertsons
In: St. Paul Capitols
|
| 1957-58 |
4 Teams |
Out: Minneapolis Bungalows
Out: St. Louis Park Culbertsons
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In: Des Moines Ice Hawks
In: Minneapolis Millers
|
| 1958-59 |
4 Teams |
Out: St. Paul Capitols
|
In: Green Bay Bobcats
In: Marquette Sentinals
|
| 1959-60 |
5 Teams |
| |
|
| United States Hockey League |
|
Out: Des Moines Ice Hawks
Out: Marquette Sentinals
Out: Minneapolis Millers
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In: Des Moines Oak Leafs
In: Milwaukee Metros
In: Minneapolis Rebels
|
| 1961-62 |
5 Teams |
Out: Milwaukee Metros
Out: Minneapolis Rebels
|
In: St. Paul Steers
In: Waterloo Black Hawks
|
| 1962-63 |
5 Teams |
Out: Des Moines Oak Leafs
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|
| 1963-64 |
4 Teams |
|
|
In: Marquette Iron Rangers
|
| 1964-65 |
5 Teams |
|
|
In: Fox Valley Astros
|
| 1965-66 |
6 Teams |
Out: Fox Valley Astros
Out: St. Paul Steers
|
In: U.S. Nationals
|
| 1966-67 |
5 Teams |
Out: U.S. Nationals
|
In: Minnesota Nationals
|
| 1967-68 |
5 Teams |
Out: Minnesota Nationals
|
In: Duluth Port Stars
In: Grand Rapids Bruins
In: Sault Ste. Marie Canadians
|
| 1968-69 |
7 Teams |
Out: Duluth Port Stars
Out: Grand Rapids Bruins
Out: Waterloo Black Hawks
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|
| 1969-70 |
4 Teams |
Out: Rochester Mustangs
|
In: Thunder Bay Twins
In: Waterloo Black Hawks
|
| 1970-71 |
5 Teams |
| 1971-72 |
5 Teams |
Out: Sault Ste. Marie Canadians
|
In: Calumet-Houghton Chiefs
In: Chicago Warriors
In: Sault Ste. Marie Greyhounds
In: Sioux City Musketeers
|
| 1972-73 |
8 Teams |
Out: Calumet-Houghton Chiefs
Out: Sault Ste. Marie Greyhounds
|
In: Copper-Country Islanders
In: Madison Blues
In: Milwaukee Admirals
|
| 1973-74 |
9 Teams |
Out: Copper-Country Islanders
Out: Madison Blues
|
In: Central Wisconsin Flyers
In: Copper-Country Chiefs
|
| 1974-75 |
9 Teams |
Out: Chicago Warriors
Out: Thunder Bay Twins
|
In: Traverse City Bays
|
| 1975-76 |
8 Teams |
Out: Central Wisconsin Flyers
Out: Copper-Country Chiefs
Out: Marquette Iron Rangers
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In: Grand Rapids Blades
|
| 1976-77 |
6 Teams |
Out: Grand Rapids Blades
Out: Milwaukee Admirals
Out: Traverse City Bays
|
In: Austin Mavericks
In: Bloomington Junior Stars
In: St. Paul Vulcans
|
| 1977-78 |
6 Teams |
| In: Anoka Nordiques
|
| 1978-79 | 7 Teams |