Colorado College won its first NCAA national championship in 1950 prior to the founding of the Midwest Collegiate Hockey League.
Likewise, Michigan won its 1948 title prior to the start of league play.
The Wolverines won two additional national championships in 1996 and 1998 after leaving the WCHA for the CCHA.
Michigan State also won its 1986 and 2007 national championships after leaving the WCHA.
Two of the five schools that made their WCHA debuts in 2013, Bowling Green and Lake Superior State, won all of their national championships while in the CCHA (one for Bowling Green in 1984, and three for Lake Superior State in 1988, 1992, and 1994).