DEFUNCT MINOR LEAGUE SYSTEMS (Past and Present):

TRIPLE A:
-
American Association (Defunct: 1903-1962; 1969-1997)

DOUBLE A:
-
Southern Association (Defunct: 1901-1961)

SINGLE A (Full Season)
-
Alabama Florida League aka Alabama State League (Defunct: 1946-1962)
-
Georgia Florida League (Defunct: 1935-1963)
-
Northern League (Defunct: 1946-1970)

DEFUNCT CLASSIFICATIONS

CLASS B:
-
Big State League (Defunct: 1947-1957)
-
Interstate League (Defunct: 1939-1952)
-
New England League (aka Northeast League) (Defunct: 1949-1877)
-
Quebec Provincial League (Defunct: 1940)
-
Triple-I League (Illinois-Iowa Indiana League) (Defunct: 1919-1961)

CLASS C:
-
Colonial League (Defunct: 1947-1950)
-
Evangeline League (Defunct: 1934-1957)
-
Longhorn League (aka Sophomore League / Southwestern League (Defunct: 1947-1961)
-
Sunset League (Defunct: 1947-1950)
-
Southwest International League (Defunct: 1951-1952)

CLASS D:
-
Arizona Mexico League / Arizona Texas League / Arizona State League (Defunct: 1928-1958)
-
Kitty League (Defunct: 1946-1955)
-
KOM League (Defunct: 1946-1952)
-
North Atlantic League (Defunct: 1946-1950)





-
Arizona-Mexico League (Defunct: 2003)
-
Central League - aka Texas Louisiana League (Defunct:1994-2005)
-
Freedom Pro Baseball League (Defunct 2012-2013)
-
Golden League - (Defunct: 2005-2010)
-
Great Central League (Defunct: 1994)
- Heartland League (Defunct: 1995-1998)
- Mid-America League (Defunct: 1995)
-
North American League (Defunct: 2011-2012)
-
North Atlantic League (Defunct: 1995-1996)
- North Central League (Defunct: 1994-1995)
-
Northern League (Defunct: 2002-2010)
-
Prairie League (Defunct: 1995-19967)
-
South Coast League (Defunct: 2007)
-
Southeastern (Defunct: 2002-2003)
-
Texas Louisiana League - aka Central League (Defunct: 1994-2005)
-
Western Baseball League (Defunct: 1995-2002)





Affiliated Minor League Baseball
Independent Minor League Baseball