Middle Atlantic League

1951	1950	1949	1948	1947	1946
Butler Tigers (PIT)	Butler Tigers (DET)	Butler Tigers (DET)	Butler Yankees (NYY)	Butler Yankees (NYY)	Butler Yankees (NYY)
Erie Sailors (WAS)	Erie Sailors (NYG)	Erie Sailors (NYG)	Erie Sailors (NYG)	Erie Sailors (NYG)	Erie Sailors (NYG)
Lockport Locks	Johnstown Johnnies	Johnstown Johnnies (BRK)	Johnstown Johnnies (BRK)	Johnstown Johnnies (BRK)	Johnstown Johnnies (BRK)
New Castle Indians	New Castle Chiefs (WAS)	New Castle Nats (WAS)	New Castle Chiefs	Niagara Falls Frontiers (PHA)	Niagara Falls Frontiers
Niagara Falls Citizens	Niagara Falls Citizens	Uniontown Coal Barons (PIT)	Uniontown Coal Barons (PIT)	Uniontown Coal Barons (PIT)
Youngstown/Oil City A's	Youngstown A's (PHA)	Youngstown A's (PHA)	Youngstown Colts	Youngstown Colts	Youngstown Gremlins
1951	1950	1949	1948	1947	1946
	Oil City Refiners	Oil City Refiners (CWS)	Oil City Refiners (CWS)	Oil City Refiners (CWS)	Oil City Oilers (PIT)
	Vandergrift Pioneers (PHI)	Vandergrift Pioneers (PHI)	Vandergrift Pioneers (PHI)	Vandergrift Pioneers (PHI)